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:
5, 8, ['g', 'a', '2875', '9581', '3263', '3103', 'J', 'b', 'h']

Ex Output:
bJ30133623


Ex Input:
22, 26, ['V', 'O', '511', 'c', '4015', 'P', 'R', 'L', '115', 'L', '6809', 'S', '2397', 'X', 'e', 'Y', 'I', 'O', '8125', 'u', 'r', '9403', 'Q', 'i', '5835', 'U', 'm']

Ex Output:
U5385iQ3049


Ex Input:
4, 16, ['339', '1747', '197', '2735', '3771', 'I', 'x', '3731', '1289', '1475', '6181', '6177', 'B', 'r', 'Q', '7121', '7855', '7455', '1087', 'D', 'B']

Ex Output:

1217QrB77161816574198211373xI17735372