Not sure how easy or hard this will be, but... Welcome to the ninth codegolf challenge! In this challenge, run a setwise XOR through two lists, and output the results in an output list. A setwise XOR means that you will only include items that are in exactly ONE list, but NOT both lists. So [1, 4, 5, 6] and [1, 2, 5] as input1 and input2, respectively, would result in an output of [4, 2, 6] or any of its permutations.
20 blocks. Assumes no item is empty terminates and accepts any values in the list - not just numbers!