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.

6, 13, ['a', 't', '3699', 'H', 'c', 'S', '2713', '5419', 'q', '7877', 'q', 'U', '833', '8411', '2003', '5373', 'P', '2913']
338Uq7787q91453172S

1, 2, ['t', '1143', '4747', 'E', 'v', 'L', '451', '7367', 'O', 'T']
3411t

8, 12, ['6649', 'B', 'x', 'q', '8867', 's', 'L', '9199', 'I', 'X', '5109', 'N', 's', '6763', 'd']

N9015XI9919