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: 14, 20, ['x', '5237', '6991', 'V', '4757', 'a', 'I', '6491', 'p', 'O', 'h', 'Y', 'r', '9213', '1787', '41', '1629', 'v', 'W', 'r', 'Z']

rWv16294117879213