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.

Input: Consider Input: 3, 15, ['O', 'X', 'Y', '8437', 'O', 'P', '5727', 'S', 'S', 'X', 'p', 'X', 'v', 'C', 'P', 'C', '9615', '2595', '4587', '6235', '557', '2491', 'p', '7927', 'f', '4643', '1519']

Output: PCvXpXSS5727PO8437Y


Input: Consider Input: 12, 13, ['I', 'y', 'w', 'a', 'Q', 'f', '2619', 'q', 'e', '8477', 'm', 'C', '203', 'C', '7237', 'h', 'C', 'M']

Output: 203C


Input: Consider Input: 3, 3, ['R', '2333', '7549', 'z']


Output: 7549