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: 2, 3, ['X', '8243', '1209']

A: 90213428
****
Q: 7, 9, ['w', 'L', '7649', 's', 'D', '45', 'L', 'O', 'H', '2781', '6883', 'h']

A: HOL
****
Q: 6, 6, ['7015', 'w', 'g', 'a', 'l', '5805', 'x', 'Q', 'E', 'T', 'h', '9291', '6437', 'i', 'q', '2037', '7211', 'd', '2741', '5035', '2263']

A:
5085
****