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:
12, 25, ['g', '7745', '5039', 'G', '883', '409', '5807', 'M', 'm', 's', 'O', 'q', 't', '1311', '5971', '6881', '9395', '7837', '451', 'E', 'C', 'K', 'x', 'd', 'G', 's', '4225', 'V']

Ex Output:
GdxKCE15473875939188617951131tq


Ex Input:
1, 2, ['N', '1117', '1343']

Ex Output:
7111N


Ex Input:
3, 13, ['4579', '7929', '51', '7515', '5139', '7561', 'L', 'T', '4097', '3691', '9697', '7429', 'n', '5407', 'M', 'C']

Ex Output:

n9247796919637904TL16579315515715