In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant 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 concatenate the elements and then reverse the string.

[EX Q]: 3, 20, ['m', '9539', 'y', 'E', 'E', 'C', 'y', 'M', 'G', 'N', '4167', '2753', 'e', '8259', 'c', '6333', 'k', 'c', '471', '6461', 'w', '8919', '3849', 'm', 't', '6973', 'K']
[EX A]: 6461471ck6333c8259e27534167NGMyCEEy

[EX Q]: 8, 16, ['G', '615', 'N', '8597', 'f', '1837', 'R', '6489', '6643', '7951', 'p', 'q', 'z', '2831', '1655', 'C', 'K', 'H', '2117', '5135', 'U', 'y', 'e', 'i', 'r', 'j', '4779', '5225']
[EX A]: C16552831zqp795166436489

[EX Q]: 13, 21, ['L', '1455', 'V', 'J', '4121', '1321', '4983', 'W', '8097', 'X', 'T', 'k', '3987', '5787', '4061', '3105', '9087', '5027', '9409', '8879', 'o', '1369', 'm', 'D', 'R', 'n']
[EX A]:
o88799409502790873105406157873987