In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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 reverse first and then concatenate.

Ex Input:
22, 26, ['O', '9947', '2663', '8883', 'o', '1499', 'u', 'n', 's', 'k', '4637', 'e', 'G', '8807', '6975', '3263', '4157', '8213', '5235', 'H', '4915', '7443', 'i', 'h', 'j', '6837', '983', '8793']

Ex Output:
7386jhi3447


Ex Input:
8, 13, ['O', '5581', 'r', 'H', 'f', 'y', 'A', 'g', '6023', 'G', 'G', 'm', '8767']

Ex Output:
7678mGG3206g


Ex Input:
3, 25, ['U', 'D', 'h', '8485', 'U', 'N', '4293', '2531', '3467', '1939', '523', '5381', 'W', '6005', 'c', 'B', 'T', 'R', '2981', 'a', '9331', 'b', 'x', 'M', '129', 'W', '2431', 'J']

Ex Output:

921Mxb1339a1892RTBc5006W18353259391764313523924NU5848h