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

[EX Q]: 9, 18, ['k', 'p', 'h', 'h', '23', 'j', 'H', '8681', 'P', 'c', '8375', '4243', '8007', 'z', '2155', '9641', 'J', 'k', 'Z']
[EX A]: kJ14695512z700834245738cP

[EX Q]: 13, 15, ['T', '5753', 'b', 'D', '4905', 'o', 'Q', '8627', 'F', 'd', 'C', 'E', '2687', 'c', 'L', 'c', 'K', '4323', '9665']
[EX A]:
Lc7862