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:
3, 8, ['5781', 'N', '6869', '4749', 'n', 'A', 'v', '9745', 'T', '9167', 'Q', 'u', 'V', '2447', '3653', 'A', 'L', 'D']

Ex Output:
9745vAn47496869


Ex Input:
7, 25, ['4811', 'm', 'H', '471', '9541', 'D', 'k', '4375', 'z', '3377', '2099', 's', 'f', 'J', 'w', '1075', '5925', 'C', 'l', '6841', 'A', '1341', '5339', 'P', '3153', 'D']

Ex Output:
3153P53391341A6841lC59251075wJfs20993377z4375k


Ex Input:
5, 15, ['7917', '8337', 'R', '1173', '2919', 'a', 'T', 'W', 'B', 'b', 'o', 'Z', 'H', '6785', 'M', 'i', '6023', '1709', 'z', 'T', 'x', 'X', 'k', 'U', '5531', 'x', 'q', 'n', '9357', 'n']

Ex Output:

M6785HZobBWTa2919