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, 8, ['m', 'u', 'y', '5347', 'a', '5973', 'D', 'J', 'l', 't', '5623', 'W', 'P', '2055', 'o', 'f', 'W', '3067', 'k', 'v']

JD5973a5347y