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: 5, 6, ['q', 'L', 'f', '391', '7601', '2925', 'i', 'C', '4787']

A: 52921067
****
Q: 2, 7, ['P', 'Q', 'i', '1593', 'M', '8577', 'd', 'Y']

A: d7758M3951iQ
****
Q: 2, 10, ['1395', '8051', '5473', 'G', '8121', '3039', '1007', 'X', '9467', '3637', '8821', '3621']

A:
73637649X700193031218G37451508
****