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, 15, ['7417', 'a', '479', 'E', '1575', '6937', '4649', '9879', '9875', 'c', '1671', 'K', '3773', '6999', 'J', '9889', 'q', '4099', 'r', '1859', 'W']

Ex Output:
J69993773K1671c9875987946496937


Ex Input:
4, 6, ['3783', '2617', '9287', 'W', '2595', 'Y', '9381', '1233', 'H', '2117', 'F', '4805', 'e', '8563', '7089', 'p', '5517']

Ex Output:
Y2595W


Ex Input:
3, 9, ['M', 'C', 'v', '9227', '8799', '4759', '4245', '4145', '9859', '2717', 'z', '8833', '677', '6811', 'E', '9983', '5353', 'L', 'E', 'B', '6089', 'U', '9923', 'E', 'b', 'x', 'K', 'L']

Ex Output:

985941454245475987999227v