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: 3, 21, ['m', 'T', '7493', 'F', 'S', 'o', '9591', 'D', 'g', '1601', 'H', 'Y', '5831', '5613', '4871', '6209', '9201', 'U', '9981', 'k', 'L', 'Q', '6995', 'a', '8587', '4385', '5633', '1295', 'i']

Lk9981U92016209487156135831YH1601gD9591oSF7493