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:
5, 15, ['U', 'z', '9255', 'F', 'G', '7403', '6287', 'm', 'P', '4715', '1613', 'G', '1911', 'S', '8823', '9415', 'z', '6359', '1225', 'T', 'z', '1557', 'r', 'M', 'i', '5047', 'b', 'W']

Ex Output:
3288S1191G31615174Pm78263047G


Ex Input:
4, 4, ['8393', '8873', '6317', 'N', '2549']

Ex Output:
N


Ex Input:
1, 6, ['K', 'i', 'E', 'B', '3545', '8981', '6329', '1917', 'F', '2787', 'J', '3883', 'T', '9643', 'q', '4943', 'T', '1205', '2567', 'l', '2893', 'F', 'S', 'N', '2311', 'n', 'R', '9091', 'Q', '869']

Ex Output:

18985453BEiK