Definition: 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: 3, 21, ['s', '7167', '3365', 'j', 'y', 'i', '6923', 'h', '7291', '7625', '4741', '9867', '2567', '8941', '5051', '2709', '1575', 'v', 'w', 'T', '6263', 'r']

6263Twv157527095051894125679867474176257291h6923iyj3365