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: 3, 6, ['6843', '7805', 'h', '9097', 'O', 'u']

A: uO7909h
****
Q: 10, 13, ['D', 'A', '4221', '7301', '1937', 'r', '5105', 'q', 'F', 'j', '9441', '6391', '7081', 'l', '6569', 'i', '8871', '5985']

A: 180719361449j
****
Q: 2, 7, ['2687', '1187', 'e', 'X', '9583', '3433', '4929', '1953', '9727', '543', 'U']

A:
929433433859Xe7811
****