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, ['5807', 'M', 'A', 'm', '4557', 'P', 'y', '2895', 'K', 'K', '5379', '2367', 'M', '8653', '3847', 'D', '7725', '6571', 'L', '2011', 'h']

Ex Output:
74833568M76329735KK5982yP7554mA


Ex Input:
19, 28, ['2809', '2943', '209', 'I', '4961', 'z', '6499', 'j', '8323', 'v', '6955', 'E', '2591', '5523', 'D', 'j', '3929', 'L', '501', 'Y', 'e', 'p', 'F', '1073', 'o', '3531', '9245', 'K']

Ex Output:
K54291353o3701FpeY105


Ex Input:
8, 13, ['6607', '2433', '6099', 'L', 'G', 'W', 'E', 'o', '5247', '981', '9817', 'x', 'J', '8681', 'T', 'Q', '6001']

Ex Output:

Jx71891897425o