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 Input:
12, 17, ['8471', '9863', '8113', 'v', 'R', '1465', 'Q', '7039', '3795', '1969', '7215', '7069', 'k', 'e', '8401', 's', '961']

Ex Output:
961s8401ek7069


Ex Input:
6, 7, ['y', '4445', 'k', 'E', '2737', '8341', '1781', 'g', '9877', '1835', 'P', 'i', 'd', 'G', 'j', 'h', 'N', 'L', '2427', 'w', '4785', '8087', '7069', 'A', '7411', '4355', '8529']

Ex Output:
17818341


Ex Input:
4, 29, ['t', 'X', 'r', 'R', '1697', 'T', 'r', '9343', 'X', 'T', 'u', '1719', 'V', 'C', '9449', '6423', '8271', '5907', '7303', '375', 'X', 'T', '5973', 'j', 'W', 'J', 'f', '5335', 'T', 'Y']

Ex Output:

T5335fJWj5973TX37573035907827164239449CV1719uTX9343rT1697R