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.

Example Input: 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']
Example Output: 6461471ck6333c8259e27534167NGMyCEEy

Example Input: 8, 11, ['3075', 'B', '4901', '6425', '7345', 'm', 'c', 'x', '7607', '2945', 'F', '5025', '3131', 'N', '6337', 'n', 'l', 'i', '3281', 'J', '5825', '9765', '8305', 'B', 'O', '1927', '6017', 'F', 'B', 'D']
Example Output: F29457607x

Example Input: 2, 4, ['6857', '5831', 'J', '493', 'H']
Example Output:
493J5831