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.

5, 7, ['u', '3017', '4149', 'z', '9231', 'C', '7461', 'e']
1647C1329

9, 14, ['d', '7259', 'A', 'U', '7005', 'P', '8215', '8925', 'e', 'x', '1265', 'H', '4075', 'J', 'G']
J5704H5621xe

6, 6, ['a', 'k', 'V', '929', '4695', 'q', '2197', '643', 'v', '9251', '8449', 'u', 'K', 'c', '2331']

q