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, ['6875', 'D', 'r']

A: rD
****
Q: 10, 13, ['3493', '8321', '8153', 'Y', 'A', 'H', 'z', 'D', 'G', '3563', 'O', '697', '7357', 'F', 'V', '515', 'a', 't']

A: 7537796O3653
****
Q: 4, 4, ['U', '3759', '1825', 'r', 's', 'e', '7861', 'c', 'J', 'H', 'a', '8051', '2403', 'V', '9237', 't', '5313']

A:
r
****