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:
2, 15, ['5071', 'O', '2071', 'i', 'D', 'T', 'h', '2471', '9431', '9245', '6947', '749', '4035', 'E', 'n', 'B', 'D', '2639', '5307', 'H']

Ex Output:
nE40357496947924594312471hTDi2071O


Ex Input:
12, 22, ['A', 'V', 'f', '3417', '3809', '8229', '2033', 'Q', '3197', '7497', 'U', 'j', 'm', '4295', 'r', 'O', 'd', '2963', '8559', '1341', '3391', 'V', '9689', '5393', '1221', '2999']

Ex Output:
V3391134185592963dOr4295mj


Ex Input:
2, 17, ['c', '3425', 'F', '627', 'H', 'B', 'i', 'i', 'Q', '3671', '345', 'R', '1727', '5071', 'P', 'r', 'T', '9257', 'i', 'S', '3971', 'm', 'O', '8657', 'l', '3519', '3321', 'x', '4137', '8229']

Ex Output:

TrP50711727R3453671QiiBH627F3425