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:
1, 4, ['619', '9623', '5589', 'r', 'Z', '3065', 'p', '9567', '5065', '8433', '2807', 'b', '8271', 'k']

Ex Output:
r98553269916


Ex Input:
4, 9, ['d', '1057', '5737', '6925', '6365', 'y', 'w', '6535', 'P', 'F']

Ex Output:
P5356wy56365296


Ex Input:
1, 4, ['2821', '4199', '4317', '167', '3907', 'P', '7833', '8395', '6471', 'M']

Ex Output:

761713499141282