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:
1, 3, ['F', 'R', 'v', 'X', '7135', 'V', '8597', '5153', 'T', '4513', 'B', '7089', 'Q', '3621', 'o', 'W', '4555', '9307', '9997', 'I', '1029', 'c', '363', 'G']

Ex Output:
vRF


Ex Input:
6, 6, ['9431', '6731', 'A', '5153', 'K', '1567', 'D', 'Y', 'a', 'q', 'x']

Ex Output:
7651


Ex Input:
6, 12, ['8143', '5239', '8241', '5783', '2845', '9781', 'o', 'Y', 'F', '9661', 'A', 'x', '4309', '5173', '7375', '873', '1015', '3273', '2685', 'o', 'K', '8663', '5135', 'S', 'N']

Ex Output:

xA1669FYo1879