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, ['5231', 'n', '6293', '4509', 'w', '545', '4403', '961', '3213', 'y', '715', 'Z', 'd', 'O', 'U', 'e', 'L', '8375']

Ex Output:
3926n1325


Ex Input:
1, 18, ['4729', '2591', '5309', 'L', 'F', '4977', 'I', 'E', '189', 'g', 'T', '3251', 'O', 'Z', '511', 'd', 'L', 'w']

Ex Output:
wLd115ZO1523Tg981EI7794FL903519529274


Ex Input:
13, 20, ['3729', '8551', '7021', '7623', 'P', 'd', '8395', '469', '5079', '5997', '2295', 'V', 'U', '2273', '8319', '3387', '1309', 'J', 'd', '2293', '3771', 'G', '4275', '5339', 'j', 'N']

Ex Output:

3922dJ9031783391383722U