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:
2, 3, ['4541', 'B', '9655', '8453', 'r', 'i', 'P']

Ex Output:
5569B


Ex Input:
15, 16, ['4531', 'a', 'I', 'W', '1071', '1301', 'v', 's', '3521', '7203', '1157', 'w', '7201', 'a', 'I', 'z', 'V', 'X', 'j']

Ex Output:
zI


Ex Input:
12, 17, ['1653', '5327', 'i', 'f', 'L', '8451', '7123', '9401', '8731', 'e', '79', 'L', '1927', '7373', 'X', 'i', 'h']

Ex Output:

hiX37377291L