diff --git a/curriculum/challenges/arabic/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.arabic.md b/curriculum/challenges/arabic/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.arabic.md
index 7d35d9e5891..63c1fe9a947 100644
--- a/curriculum/challenges/arabic/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.arabic.md
+++ b/curriculum/challenges/arabic/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.arabic.md
@@ -20,8 +20,6 @@ undefined
 tests:
   - text: ''
     testString: 'assert.deepEqual(uniteUnique([1, 3, 2], [5, 2, 1, 4], [2, 1]), [1, 3, 2, 5, 4], "<code>uniteUnique([1, 3, 2], [5, 2, 1, 4], [2, 1])</code> should return <code>[1, 3, 2, 5, 4]</code>.");'
-  - text: ''
-    testString: 'assert.deepEqual(uniteUnique([1, 3, 2], [1, [5]], [2, [4]]), [1, 3, 2, [5], [4]], "<code>uniteUnique([1, 3, 2], [1, [5]], [2, [4]])</code> should return <code>[1, 3, 2, [5], [4]]</code>.");'
   - text: ''
     testString: 'assert.deepEqual(uniteUnique([1, 2, 3], [5, 2, 1]), [1, 2, 3, 5], "<code>uniteUnique([1, 2, 3], [5, 2, 1])</code> should return <code>[1, 2, 3, 5]</code>.");'
   - text: ''
diff --git a/curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.chinese.md b/curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.chinese.md
index 7b13f3ef57b..7cb14161546 100644
--- a/curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.chinese.md
+++ b/curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.chinese.md
@@ -21,8 +21,6 @@ localeTitle: 排序联盟
 tests:
   - text: '<code>uniteUnique([1, 3, 2], [5, 2, 1, 4], [2, 1])</code>应该返回<code>[1, 3, 2, 5, 4]</code> <code>uniteUnique([1, 3, 2], [5, 2, 1, 4], [2, 1])</code> <code>[1, 3, 2, 5, 4]</code> 。'
     testString: 'assert.deepEqual(uniteUnique([1, 3, 2], [5, 2, 1, 4], [2, 1]), [1, 3, 2, 5, 4], "<code>uniteUnique([1, 3, 2], [5, 2, 1, 4], [2, 1])</code> should return <code>[1, 3, 2, 5, 4]</code>.");'
-  - text: '<code>uniteUnique([1, 3, 2], [1, [5]], [2, [4]])</code>应该返回<code>[1, 3, 2, [5], [4]]</code> <code>uniteUnique([1, 3, 2], [1, [5]], [2, [4]])</code> <code>[1, 3, 2, [5], [4]]</code> 。'
-    testString: 'assert.deepEqual(uniteUnique([1, 3, 2], [1, [5]], [2, [4]]), [1, 3, 2, [5], [4]], "<code>uniteUnique([1, 3, 2], [1, [5]], [2, [4]])</code> should return <code>[1, 3, 2, [5], [4]]</code>.");'
   - text: '<code>uniteUnique([1, 2, 3], [5, 2, 1])</code>应该返回<code>[1, 2, 3, 5]</code> <code>uniteUnique([1, 2, 3], [5, 2, 1])</code> <code>[1, 2, 3, 5]</code> 。'
     testString: 'assert.deepEqual(uniteUnique([1, 2, 3], [5, 2, 1]), [1, 2, 3, 5], "<code>uniteUnique([1, 2, 3], [5, 2, 1])</code> should return <code>[1, 2, 3, 5]</code>.");'
   - text: '<code>uniteUnique([1, 2, 3], [5, 2, 1, 4], [2, 1], [6, 7, 8])</code>应该返回<code>[1, 2, 3, 5, 4, 6, 7, 8]</code> <code>uniteUnique([1, 2, 3], [5, 2, 1, 4], [2, 1], [6, 7, 8])</code> <code>[1, 2, 3, 5, 4, 6, 7, 8]</code> 。'
diff --git a/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.english.md b/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.english.md
index b7a9495c3bd..ed42bab1439 100644
--- a/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.english.md
+++ b/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.english.md
@@ -26,8 +26,6 @@ Remember to use <a href='http://forum.freecodecamp.org/t/how-to-get-help-when-yo
 tests:
   - text: '<code>uniteUnique([1, 3, 2], [5, 2, 1, 4], [2, 1])</code> should return <code>[1, 3, 2, 5, 4]</code>.'
     testString: 'assert.deepEqual(uniteUnique([1, 3, 2], [5, 2, 1, 4], [2, 1]), [1, 3, 2, 5, 4], "<code>uniteUnique([1, 3, 2], [5, 2, 1, 4], [2, 1])</code> should return <code>[1, 3, 2, 5, 4]</code>.");'
-  - text: '<code>uniteUnique([1, 3, 2], [1, [5]], [2, [4]])</code> should return <code>[1, 3, 2, [5], [4]]</code>.'
-    testString: 'assert.deepEqual(uniteUnique([1, 3, 2], [1, [5]], [2, [4]]), [1, 3, 2, [5], [4]], "<code>uniteUnique([1, 3, 2], [1, [5]], [2, [4]])</code> should return <code>[1, 3, 2, [5], [4]]</code>.");'
   - text: '<code>uniteUnique([1, 2, 3], [5, 2, 1])</code> should return <code>[1, 2, 3, 5]</code>.'
     testString: 'assert.deepEqual(uniteUnique([1, 2, 3], [5, 2, 1]), [1, 2, 3, 5], "<code>uniteUnique([1, 2, 3], [5, 2, 1])</code> should return <code>[1, 2, 3, 5]</code>.");'
   - text: '<code>uniteUnique([1, 2, 3], [5, 2, 1, 4], [2, 1], [6, 7, 8])</code> should return <code>[1, 2, 3, 5, 4, 6, 7, 8]</code>.'
diff --git a/curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.portuguese.md b/curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.portuguese.md
index 38cadcc21e0..bdfb4dd61ab 100644
--- a/curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.portuguese.md
+++ b/curriculum/challenges/portuguese/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.portuguese.md
@@ -21,8 +21,6 @@ localeTitle: União ordenada
 tests:
   - text: '<code>uniteUnique([1, 3, 2], [5, 2, 1, 4], [2, 1])</code> deve retornar <code>[1, 3, 2, 5, 4]</code> .'
     testString: 'assert.deepEqual(uniteUnique([1, 3, 2], [5, 2, 1, 4], [2, 1]), [1, 3, 2, 5, 4], "<code>uniteUnique([1, 3, 2], [5, 2, 1, 4], [2, 1])</code> should return <code>[1, 3, 2, 5, 4]</code>.");'
-  - text: '<code>uniteUnique([1, 3, 2], [1, [5]], [2, [4]])</code> deve retornar <code>[1, 3, 2, [5], [4]]</code> .'
-    testString: 'assert.deepEqual(uniteUnique([1, 3, 2], [1, [5]], [2, [4]]), [1, 3, 2, [5], [4]], "<code>uniteUnique([1, 3, 2], [1, [5]], [2, [4]])</code> should return <code>[1, 3, 2, [5], [4]]</code>.");'
   - text: '<code>uniteUnique([1, 2, 3], [5, 2, 1])</code> deve retornar <code>[1, 2, 3, 5]</code> .'
     testString: 'assert.deepEqual(uniteUnique([1, 2, 3], [5, 2, 1]), [1, 2, 3, 5], "<code>uniteUnique([1, 2, 3], [5, 2, 1])</code> should return <code>[1, 2, 3, 5]</code>.");'
   - text: '<code>uniteUnique([1, 2, 3], [5, 2, 1, 4], [2, 1], [6, 7, 8])</code> deve retornar <code>[1, 2, 3, 5, 4, 6, 7, 8]</code> .'
diff --git a/curriculum/challenges/russian/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.russian.md b/curriculum/challenges/russian/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.russian.md
index 54815f94c35..3db2de5e6e4 100644
--- a/curriculum/challenges/russian/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.russian.md
+++ b/curriculum/challenges/russian/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.russian.md
@@ -21,8 +21,6 @@ localeTitle: Сортированный союз
 tests:
   - text: '<code>uniteUnique([1, 3, 2], [5, 2, 1, 4], [2, 1])</code> должны вернуться <code>[1, 3, 2, 5, 4]</code> .'
     testString: 'assert.deepEqual(uniteUnique([1, 3, 2], [5, 2, 1, 4], [2, 1]), [1, 3, 2, 5, 4], "<code>uniteUnique([1, 3, 2], [5, 2, 1, 4], [2, 1])</code> should return <code>[1, 3, 2, 5, 4]</code>.");'
-  - text: '<code>uniteUnique([1, 3, 2], [1, [5]], [2, [4]])</code> должны вернуться <code>[1, 3, 2, [5], [4]]</code> .'
-    testString: 'assert.deepEqual(uniteUnique([1, 3, 2], [1, [5]], [2, [4]]), [1, 3, 2, [5], [4]], "<code>uniteUnique([1, 3, 2], [1, [5]], [2, [4]])</code> should return <code>[1, 3, 2, [5], [4]]</code>.");'
   - text: '<code>uniteUnique([1, 2, 3], [5, 2, 1])</code> должен вернуться <code>[1, 2, 3, 5]</code> .'
     testString: 'assert.deepEqual(uniteUnique([1, 2, 3], [5, 2, 1]), [1, 2, 3, 5], "<code>uniteUnique([1, 2, 3], [5, 2, 1])</code> should return <code>[1, 2, 3, 5]</code>.");'
   - text: '<code>uniteUnique([1, 2, 3], [5, 2, 1, 4], [2, 1], [6, 7, 8])</code> должны возвращать <code>[1, 2, 3, 5, 4, 6, 7, 8]</code> .'
diff --git a/curriculum/challenges/spanish/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.spanish.md b/curriculum/challenges/spanish/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.spanish.md
index 16af5e48c06..4ef16a633e7 100644
--- a/curriculum/challenges/spanish/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.spanish.md
+++ b/curriculum/challenges/spanish/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sorted-union.spanish.md
@@ -21,8 +21,6 @@ localeTitle: Unión ordenada
 tests:
   - text: '<code>uniteUnique([1, 3, 2], [5, 2, 1, 4], [2, 1])</code> debe devolver <code>[1, 3, 2, 5, 4]</code> .'
     testString: 'assert.deepEqual(uniteUnique([1, 3, 2], [5, 2, 1, 4], [2, 1]), [1, 3, 2, 5, 4], "<code>uniteUnique([1, 3, 2], [5, 2, 1, 4], [2, 1])</code> should return <code>[1, 3, 2, 5, 4]</code>.");'
-  - text: '<code>uniteUnique([1, 3, 2], [1, [5]], [2, [4]])</code> debe devolver <code>[1, 3, 2, [5], [4]]</code> .'
-    testString: 'assert.deepEqual(uniteUnique([1, 3, 2], [1, [5]], [2, [4]]), [1, 3, 2, [5], [4]], "<code>uniteUnique([1, 3, 2], [1, [5]], [2, [4]])</code> should return <code>[1, 3, 2, [5], [4]]</code>.");'
   - text: '<code>uniteUnique([1, 2, 3], [5, 2, 1])</code> debe devolver <code>[1, 2, 3, 5]</code> .'
     testString: 'assert.deepEqual(uniteUnique([1, 2, 3], [5, 2, 1]), [1, 2, 3, 5], "<code>uniteUnique([1, 2, 3], [5, 2, 1])</code> should return <code>[1, 2, 3, 5]</code>.");'
   - text: '<code>uniteUnique([1, 2, 3], [5, 2, 1, 4], [2, 1], [6, 7, 8])</code> debe devolver <code>[1, 2, 3, 5, 4, 6, 7, 8]</code> .'