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: 4, 20, ['9929', '4439', 'e', 'k', 'o', '1507', 'z', '701', '1983', 'z', '6765', '8191', '1489', '5271', 's', 'v', '15', '7559', 'V', 'k', 'X', '4413', '2049', 'm']

kV755915vs5271148981916765z1983701z1507ok