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:
15, 25, ['n', '4163', '6355', '4085', 'u', 'X', '7669', 'c', '791', '7517', '3153', 'k', 'S', '1263', 'P', '1613', 'q', '7693', '339', '7041', '3591', '9429', '4695', '2959', 'm', 'g', '2827', '6699', '1243', 'Y']

Ex Output:
m959259649249195314079333967q3161P


Ex Input:
1, 5, ['1817', '3607', 'J', 'p', 'H', '639', '601', 'f', '8613', 'q', '1999', '4447', 'g', '8449', '1125', '1103', 'Y', 'p', 'Z', '5707', 'p', 'Q', 'a', '3889', 'Z', '5393', 'd', '9023', '4153']

Ex Output:
HpJ70637181


Ex Input:
22, 22, ['8859', '2485', '4507', 'N', 'd', '915', '4857', '4673', '3297', 'M', '3817', '6953', 'I', '3897', 'u', '9219', 'A', '4071', '6317', '237', 'm', 'f']

Ex Output:

f