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, 15, ['8447', 'w', '4731', 'e', 'S', 'f', '2023', '6207', 'j', '2397', 'U', '3521', '2853', 'l', 't']

tl28533521U2397j