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: 13, 21, ['s', 'h', '8999', 'w', 'V', 's', 'y', 'U', 'o', '3869', 'm', '2607', '8657', 'J', 'L', '7335', 'K', '2655', 'R', 'T', 'o', 'v', 'g', '8081', '3655', 'a']

oTR2655K7335LJ8657