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.
--------
Question: 5, 20, ['5377', 'j', 'j', '1767', '2103', '9547', 'I', 'M', '4067', '2571', 'V', 'Z', 'O', '3421', 'V', 'v', '4919', 'X', '307', 'M', '1603']

Answer: M307X4919vV3421OZV25714067MI95472103


Question: 12, 17, ['T', 'o', 'e', '5003', 'r', '1309', '6761', 'h', '7471', '7863', '8521', 'L', '8941', '4289', '5099', '9433', 'U', '387', '5857', '9301', '5107', 'J', '1949', '7591', '4167', '1385', '4517', 'A']

Answer: U9433509942898941L


Question: 9, 18, ['1633', '2117', 'x', '5667', '9509', 'r', '4869', '2915', '3869', '2805', 'J', 'p', 'W', 'E', '6863', 'H', '6301', 'S', '3307', 'k', 'U', 'a', 'q', '4501', 'n', 'j', '1961', '8767', '4583', 'c']

Answer:
S6301H6863EWpJ28053869