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: 15, 22, ['i', 'l', '2773', '6973', '5253', '9461', 'b', 'y', 'g', '5613', 'I', '5563', '9497', '5201', 'P', 'P', 'P', 'w', 'D', '8287', 'x', '5815', 'i']

5815x8287DwPPP