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: 9, 18, ['h', '8437', 'G', '6923', '8365', '5709', '9391', '6121', 'x', '7505', 'n', 'P', '2389', '79', '3053', '1753', 'E', '3609', '5285', '9775', 'X', 'f']

3609E17533053792389Pn7505x