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: 4, 8, ['g', '6711', '6701', 'p', '6345', 'W', '9953', '3185', 'W']

Output: 58133599W5436p


Input: Consider Input: 7, 18, ['4879', '857', 'X', '8629', 'K', 'l', 'U', '5611', '5989', '4439', '4897', 'D', 'p', '8109', 'F', 'a', '4665', 'Q']

Output: Q5664aF9018pD7984934498951165U


Input: Consider Input: 4, 7, ['2519', '2607', 'P', '6901', 'W', '6457', 'Z', 'a', '1245', '6749', '37', 'c', '5195', '5161', 'y', '149', '5149', '3171', 'A', '6055', 'f', '9913', '3289']


Output: Z7546W1096