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:
15, 16, ['1107', '1863', 'L', '6929', '9633', '9399', '4479', 'V', 'o', 'x', '1065', '7955', 'i', '7413', '6237', 'S', '1461', '8481', '7143', 's', 'U', 'd']

Ex Output:
S7326


Ex Input:
4, 13, ['6993', '5601', 'n', 'J', 'E', 'M', 'd', 'T', 'V', 'C', '4969', 'J', 'F']

Ex Output:
FJ9694CVTdMEJ


Ex Input:
12, 18, ['3591', 'c', '2185', '1267', 'E', '2111', '3759', 'h', 'U', 'h', '6333', 'D', 'O', 'K', '6543', '1185', 'm', 'F', 'j', 'x', 'k', 'w', '8833']

Ex Output:

Fm58113456KOD