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: 21, 23, ['f', '7973', '2353', '6219', '5427', 'U', '3789', '4411', '9833', '8403', '5901', 'a', '9427', 'k', 'Y', 'p', '799', 'u', 'V', '3055', '5761', 'T', 'Y', '4729']

YT5761