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, ['S', 'm', 'j', '6193', '79', '9401', '2469', '7919', '9563', 'l', 'm', 'A', '983', 'M', '6661']

A: mS
****
Q: 5, 13, ['i', '5415', '7121', 'Q', '4369', '7725', '573', 'H', 'q', 't', '5581', '9029', 'Y']

A:
Y92091855tqH37552779634
****