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: 5, 23, ['E', 'i', '6237', '3573', 'k', '9053', '1793', '7083', 'O', 'Z', '1891', '9749', 'W', '6921', 'u', 's', '8351', '8209', '5109', '1061', '5575', 'r', 'm', '2069']

mr55751061510982098351su6921W97491891ZO708317939053k