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:
13, 19, ['I', 'e', 'D', '6689', '6047', '6839', '6523', 'e', '6939', '653', '5701', 'r', '7005', 'e', '7821', 'w', '6221', '3243', 'H', '1305', 'w', '3995', '1873', '6035', '5543', 'M', '8079', '6091', 'B']

Ex Output:
H32436221w7821e7005


Ex Input:
7, 15, ['t', '8459', 'T', '7029', '3995', '8369', 'H', 'o', '8539', '9399', 'C', '6335', '1161', 'F', 'N', 'Y', 'Y', 'G', 'R', '3577', '4897', 'r', 'j', '9077', 'u', '4969', 'Z', '8933']

Ex Output:

NF11616335C93998539oH