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:
6, 7, ['J', '701', 'm', '8837', 'b', 'd', '5911', 'y', '8031']

Ex Output:
1195d


Ex Input:
4, 7, ['C', 'j', 'F', '495', 'H', '6595', 'h', '7567', 'f']

Ex Output:
h5956H594


Ex Input:
4, 5, ['A', 'y', 'N', 'y', '851', '2263']

Ex Output:

158y