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, 8, ['w', '7571', 'o', '235', 's', 'n', '3941', '6357', '3251', 'G', '5961', 'z', 'N', '5029', '7589', '3993', '5087', '6351', '5799', '1943', '7661', 'S']

Ex Output:
75361493ns532o


Ex Input:
7, 18, ['4879', '857', 'X', '8629', 'K', 'l', 'U', '5611', '5989', '4439', '4897', 'D', 'p', '8109', 'F', 'a', '4665', 'Q']

Ex Output:
Q5664aF9018pD7984934498951165U


Ex Input:
6, 16, ['d', 'N', 'G', 'g', '523', '8325', 'p', '3541', '5279', '167', 'U', 'x', '5967', 'N', '4379', '1765', '2233', 'R', '9871', '2693', '3899', '9123', 'u', 'U', '6201', '1855', 'Y', 'E']

Ex Output:

56719734N7695xU76197251453p5238