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, 3, ['r', '5153', 'I']

Ex Output:
I3515r


Ex Input:
1, 5, ['E', 'h', 'N', '9931', 'F', '9367', 'N', 'K', 'Y', '1449', '8503', '9277', 'k', '9627', 'Q', 'v']

Ex Output:
F1399NhE


Ex Input:
6, 14, ['9311', '8013', '2161', 'h', 'p', '3439', '7409', '2635', 'W', '9601', '8265', 'e', '781', 'i', '6705', '4991', 'f', '8237', 'H', '7805', '5909', 'Z', '7303']

Ex Output:

i187e56281069W536290479343