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:
15, 16, ['243', '3195', '1763', '1283', '1463', '2655', '7', 'S', 's', '3155', 's', 'D', '7659', 'Q', 'm', '3821', '593', 'D', '5447']

Ex Output:
3821m


Ex Input:
2, 7, ['t', 'F', '1187', '7655', '9523', 'q', 'c']

Ex Output:
cq952376551187F


Ex Input:
4, 6, ['f', 't', '3473', 'k', 'K', 'q', 'V', '2993', '4591', '1021', 'q', '2153', 'm', 's']

Ex Output:

qKk