In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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 reverse first and then concatenate.

Input: Consider Input: 15, 16, ['1653', '7507', 'X', '6095', 'J', 'F', 'x', 'O', 'r', '1425', 'H', 'v', '5947', 'N', '5891', 'b', 'H']

Output: b1985


Input: Consider Input: 3, 4, ['435', 'K', '8051', '7159']

Output: 95171508


Input: Consider Input: 8, 21, ['1015', '847', 't', 'G', '3813', 'h', 'w', '7825', '2717', 'Q', 'p', 'P', 'p', 'C', '7745', 'y', '8065', '5499', '651', 'b', '4195', 'e', '75', '6773', 'G', '8087', '4125', 's', 'O', 'G']


Output: 5914b15699455608y5477CpPpQ71725287