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.

Example Input: 16, 16, ['7539', 'A', '8589', 'T', 'Q', 'u', 'z', 'A', '9751', '2913', '7453', '5649', 'Q', 'H', 'Z', 'O', 'v', 'V']
Example Output: O

Example Input: 8, 12, ['K', 'x', 'a', 'A', '6203', '117', '1007', '6063', '569', '9809', '9097', 'w', '3939', 'l', 'V']
Example Output: w790990899653606

Example Input: 2, 6, ['6595', 'T', '4337', 'P', 'q', 'Q', '9599', '431']
Example Output:
QqP7334T