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.

Ex Input:
6, 15, ['T', 'u', 'v', '5523', '3025', 'P', '2843', '5033', '3237', 'X', 'e', '5147', '849', '9773', '7559', 's', 'L', 'y', '6195', '5073', 't']

Ex Output:
755997738495147eX323750332843P


Ex Input:
9, 17, ['6095', '421', '2313', 'i', 'Y', 'K', 'Q', 'o', '4451', 'a', '5975', '3867', 'y', '8889', '1371', 'S', 'O', 'U', 'O', 'B', '1333', '8629', '7263', 'h', 'T']

Ex Output:
OS13718889y38675975a4451


Ex Input:
4, 12, ['8963', '7713', '1091', 'w', '9295', '7711', '5773', '2969', '9447', 'U', 'N', 'P', '9819', '9857', '4379']

Ex Output:

PNU94472969577377119295w