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:
10, 13, ['v', '9787', '3803', 'P', 'M', '7127', '7845', '6369', 'u', '8715', 'I', '7491', '6593', '459', '1747', 'L']

Ex Output:
39561947I5178


Ex Input:
2, 6, ['6717', '6639', 'l', 'i', 'o', '1819']

Ex Output:
9181oil9366


Ex Input:
11, 13, ['4933', 'b', '305', '2041', '4771', 'h', '9929', '7859', 'F', 'E', '3657', 'L', '4059', 'P', '2239', '2285', '9121', 'v', 'b', '8791', 'c', 'h']

Ex Output:

9504L7563


