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:
8, 9, ['E', '4081', '2021', '2585', 'I', '6983', '3271', 'K', '4793', 'd', '2835', 'Q', 'T', 'f', '2133', 's', 'G', '93', 'B', 'n', 'b', 'v', 'N', 'B', '6625', 'v', 'd', '5407']

Ex Output:
3974K


Ex Input:
2, 12, ['9797', 'D', '41', 'Y', 's', 'u', 'X', 'Q', '2437', '7385', '7137', 'S', '6367', 'w', 'f', '7021', '7685', '7413']

Ex Output:
S731758377342QXusY14D


Ex Input:
8, 22, ['7137', 'j', 'Y', 'M', '6081', 'X', '1871', '3733', '3291', 'J', 'Q', '1363', '8707', 'L', 'Y', '8879', 'o', '5725', '4209', 'o', 'E', 'W', 'l']

Ex Output:

WEo90245275o9788YL70783631QJ19233373