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.

Input: Consider Input: 10, 20, ['G', 'Y', 'M', 'F', 'Y', '6993', '9057', '5529', '35', 'D', '6173', '1043', '5845', 'V', 'd', '7497', '9035', 'r', 'U', '5155']

Output: 5155Ur90357497dV584510436173D


Input: Consider Input: 4, 9, ['7691', '4539', '3381', 'b', 'g', '9615', '8187', '177', '2473', '8579', '9739', 'C', 'v', 'q', '2879', 'Z', '6817', '5247', '5477', 'Y', 'w', '3981']

Output: 247317781879615gb


Input: Consider Input: 6, 6, ['s', '1271', 'e', '3605', 'p', '6803', 'y', 'F', '4269', 'O', '7517', 'T', '9129', 'e', '9793', 'Y', '4963']


Output: 6803