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:
2, 11, ['6519', 'l', '6577', 'z', '4271', 'R', 'O', '7809', 'K', 'V', '4531']

Ex Output:
1354VK9087OR1724z7756l


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:
5, 10, ['599', '8623', 'S', '5673', '8975', 'M', '7341', '9841', '3899', '4859', 'J', '3399', '3655', '9531', '2995', 'F', 'L', 'J', 'x', 'q', 'k', '3493', '127', '5579', '5217', '4711', '3491']

Ex Output:

9584998314891437M5798