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.

[Q]: 11, 14, ['c', '6897', 'S', 'J', 'F', '5099', 'b', 'M', 's', 'h', '7725', '3313', 'a', 'o', 'p', '2135', 'I', 'E', 'G', '2273', '9799', '1027', '3431', '6795', 'o', 'k', '3559', 'd']
[A]: oa31335277


[Q]: 3, 8, ['b', 'y', '8779', '3949', 'c', 'a', '111', '6649']
[A]: 9466111ac94939778


[Q]: 20, 29, ['8173', '6645', '2877', '3157', 'C', 'H', '1429', 's', 'Q', '2107', 'w', 's', '6377', '4659', '7003', 'm', '7931', 'D', '9691', '8707', 'o', 'm', '3757', 'x', 'v', '7979', 'W', '2925', 'R']
[A]:
R5292W9797vx7573mo7078