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:
4, 9, ['9213', '2865', '1347', 'Y', 'A', '6261', 'E', 'w', 'r', 'B', 'j', '9157', 'r', '485', '8951']

Ex Output:
rwE1626AY


Ex Input:
4, 20, ['p', '1643', 'O', '5867', 'Y', 'j', '2411', 'Z', '2563', '4757', 'B', 'b', '7489', '815', 'c', '6631', '8571', '6537', 'm', 'T']

Ex Output:
Tm735617581366c5189847bB75743652Z1142jY7685


Ex Input:
28, 29, ['t', '4445', '3171', 'F', 'X', '2283', 'c', 'T', '6813', 'C', '1691', 'K', 'c', '9143', '3191', 'g', 'F', 'q', 'd', '9737', 'S', 'v', 't', '27', 'O', '7693', '3199', 'm', '6955', 'T']

Ex Output:

5596m