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]: 4, 7, ['1247', 's', 'J', 'w', 'X', '7211', 'c']
[A]: c1127Xw


[Q]: 7, 18, ['4879', '857', 'X', '8629', 'K', 'l', 'U', '5611', '5989', '4439', '4897', 'D', 'p', '8109', 'F', 'a', '4665', 'Q']
[A]: Q5664aF9018pD7984934498951165U


[Q]: 3, 10, ['b', '45', '2841', 'x', '5249', '4671', '7273', 'p', '9381', 'G', '7055', 'f', '3705', '1529']
[A]:
G1839p372717649425x1482