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.

Ex Input:
4, 4, ['Z', '7465', 'J', 'W']

Ex Output:
W


Ex Input:
2, 4, ['o', '5393', 'p', 'h', '5617', 'F', 'I', 'a']

Ex Output:
hp3935


Ex Input:
3, 6, ['q', '2319', 'e', 'P', '131', 'l', 'E', 'i', 't', '2945', '1625', 'F', '1781', 'O', '3581', '7259', 'W', 'U', '8699', 'W', 'p', 'v', 'S', 'O', '963', '4523', 'D', '4907', '8329', '7247']

Ex Output:

l131Pe