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:
3, 11, ['V', '9869', 'f', 'X', '3395', 'k', 'B', '6407', 'J', 'Y', 'B', '5067', '4041', 'g', '5145', '8983', 'o', 'D']

Ex Output:
BYJ7046Bk5933Xf


Ex Input:
3, 11, ['5797', 'D', '289', 'D', '2703', '2975', 'o', 'd', '2433', 'c', 'P', 'B', '2247', '4535', '9153', 'J', '1141', '6809', '2473', 'o', 'h', '4577', 'p', 'D', '3801', '4679', 'B']

Ex Output:
Pc3342do57923072D982


Ex Input:
10, 21, ['3165', '4241', 'p', '2657', 'X', '1821', '3543', 'k', 'q', 'f', 'Q', 'E', 'C', '4981', '7279', '4057', '6635', 'e', '6647', '1031', 'E']

Ex Output:

E13017466e5366750497271894CEQf