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:
2, 4, ['i', '4995', '8615', 'O']

Ex Output:
O86154995


Ex Input:
7, 8, ['w', '4965', 'V', 'G', '4247', '1425', 'A', '7475']

Ex Output:
7475A


Ex Input:
5, 18, ['w', 'F', 'J', 'n', '9581', 'T', 'I', '711', 'e', '1679', '4857', '1157', 'c', 'Q', '7593', 'g', 'K', 'Q', 'H', '2585', '2473', '655']

Ex Output:

QKg7593Qc115748571679e711IT9581