In each input array, every number repeats at least once, except for two. Write a function that returns the two unique numbers.

Examples

returnUnique([5, 4, 5, 1, 4, 3, 4, 6, 6, 6]) ➞ [1, 3]

returnUnique([1, 2, 1, 3, 1, 7, 1, 9, 7, 9]) ➞ [2, 3]

returnUnique([9, 5, 6, 8, 7, 7, 1, 1, 1, 1, 1, 9, 8]) ➞ [5, 6]

Notes

Keep the same ordering in the output.