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]: 12, 20, ['869', '6009', 'Y', '8839', 'j', 'Q', '4485', 'V', 'p', '6129', '4495', '5839', 's', 'B', 'I', 'h', 'q', '6895', '8297', 'A', '8809']
[EX A]: A82976895qhIBs5839

[EX Q]: 15, 16, ['243', '3195', '1763', '1283', '1463', '2655', '7', 'S', 's', '3155', 's', 'D', '7659', 'Q', 'm', '3821', '593', 'D', '5447']
[EX A]: 3821m

[EX Q]: 3, 12, ['5623', 'l', 'y', '7067', 'g', 'A', 'A', 'V', '6863', 's', 'M', '7575', 'n', '6829', 'r', 'h', 'E', '573', '9045', '3173']
[EX A]:
7575Ms6863VAAg7067y