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:
3, 15, ['O', 'a', '6377', 'R', '1363', '8013', '1923', '4039', 'j', '1365', 'E', 'P', '7225', '7813', 'I']

Ex Output:
I31875227PE5631j9304329131083631R7736


Ex Input:
9, 19, ['5843', 'b', '161', 'Z', 'h', '2323', '25', 'S', 'Z', 'A', 'l', 'R', 'O', '4543', 'd', 'J', '1667', 'I', 'N', 'K', 'T', '2767', '4409', 'B']

Ex Output:
NI7661Jd3454ORlAZ


Ex Input:
23, 26, ['2291', '1199', '7831', 'j', 'T', '2507', '2017', '6551', '287', 'z', '3041', '7857', 'j', '4899', 'a', '1399', '3515', '6011', '1873', 'L', '8309', '2409', 'S', '7937', '7735', '1303']

Ex Output:

303153777397S