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:
4, 4, ['675', 'e', 'A', 'H', 'O', 'E', 'g', 'j', 'j', '5167', '2367', 'u', 'E', '753', 'M']

Ex Output:
H


Ex Input:
4, 5, ['3001', '661', 'S', 'N', '7919']

Ex Output:
9197N


Ex Input:
1, 14, ['9349', '7905', '1707', '85', '3737', 'M', '4389', 'L', 'p', 'z', 'U', 'e', 'H', 'K', 'W', '7643', 'd', 'k', '5287', '201', '6547', '9799']

Ex Output:

KHeUzpL9834M737358707150979439