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:
2, 2, ['q', 'w', 'D', 'A', '3751', 'G', '2419', 'V']

Ex Output:
w


Ex Input:
1, 2, ['y', 'n', 'a', '4367', 'Q', 'S']

Ex Output:
ny


Ex Input:
2, 9, ['i', '2033', '2597', '9383', 'Y', 'P', '5927', 'N', 'l']

Ex Output:

lN7295PY383979523302