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, ['4857', '9647']
[A]: 74697584


[Q]: 1, 2, ['y', 'n', 'a', '4367', 'Q', 'S']
[A]: ny


[Q]: 2, 4, ['i', '1997', '3601', 'h', '8115', 'u', 'w', '3841', 'k', 'R']
[A]:
h10637991