In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting string. 'i' and 'j' will be non-negative, and will always have a value less than the length of A. 'i' will always be less than 'j'. Perform the operations in order, i.e., do not reverse first and then concatenate.

[EX Q]: 4, 16, ['9593', '3873', 'f', 'l', 'Z', '6157', 'n', 'l', '827', '9127', '143', 'J', '2223', 'A', 'o', '4733', 'C', 'U', 'V', '2613', 'r', 't', 'Q', 'l', 'H', '5189', 'J', 'I']
[EX A]: 3374oA3222J3417219728ln7516Zl

[EX Q]: 1, 6, ['H', '103', '7091', 'V', 'T', 'F']
[EX A]: FTV1907301H

[EX Q]: 1, 17, ['t', 'Z', '8899', 'L', '7917', 'c', 'r', '3297', '6949', '8653', '6447', '1469', 'y', 'g', 'L', '7139', 'E', 'z', 'f', 'q']
[EX A]:
E9317Lgy96417446356894967923rc7197L9988Zt