In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant 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 concatenate the elements and then reverse the string.

Ex Input:
6, 10, ['6855', '6165', 'o', '8699', '3887', '659', '7185', '7243', '7311', 'I', '7531', 'c', '901', 'v', 'C', 'P', 's', '3891', '571', 'g', '7413', 'H']

Ex Output:
I731172437185659


Ex Input:
4, 6, ['Q', 'C', '3939', '5659', '6505', '2527', '2785', 'H', '2359', '925', '921', 'f', '1597', '7131', 'B', '3075', '9017', 'T', '8723', '2717']

Ex Output:
252765055659


Ex Input:
17, 19, ['j', 'K', '5229', 'g', '3977', '1071', '3887', '6445', 'w', '4323', '2093', 's', '3283', 'k', '1589', '7363', 'b', 'U', '6125', '7883', 'P', '2479', 'W', '9003', '3983', 'h']

Ex Output:

6125Ub