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: 10, 12, ['P', '9937', 'A', 'a', 'e', '499', 'W', '8903', 'G', 'v', '531', 'm', 'r', 'c', 'V', 'K', '4923', '2599', 'd', '3787']

m531v