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, 2, ['k', 'A', '2153']

Ex Output:
Ak


Ex Input:
6, 8, ['J', '4955', '3497', '8869', 'n', '2093', '6249', 'A', '8957']

Ex Output:
A94263902


Ex Input:
1, 2, ['8037', 'Z']

Ex Output:

Z7308