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, ['a', '8801', '2379']

Ex Output:
97321088a


Ex Input:
6, 7, ['355', '4183', '3563', '8547', '4351', '6841', '5451', 'H', '8035', 'x', '3305', '4233', 'k', '2155', '9987', 'v']

Ex Output:
15451486


Ex Input:
1, 25, ['5405', 'o', '6897', '5797', 'P', 'x', 's', 'C', '4783', '6127', '9345', '6451', 't', '4945', '371', '5487', '7191', '2107', 'd', 'C', 'T', 'U', '3759', 'F', 'N', 'a']

Ex Output:

NF9573UTCd7012191778451735494t1546543972163874CsxP79757986o5045