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]: 1, 2, ['A', '8103', '7829']
[A]: 3018A


[Q]: 7, 8, ['9589', 'N', 'w', '429', '5545', '5047', '4133', 'p', 'a', '3793']
[A]: p3314


[Q]: 3, 15, ['W', '1391', '3031', '497', '8617', '5211', 'i', 'L', '8515', '41', 'k', '1699', '7615', '6393', 's', '8409', '9921', 'W', 'y', 'a', 'B', 'H']
[A]:
s393651679961k145158Li112571687941303