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.

Q: 13, 18, ['1931', '2101', 'U', '3395', '7549', '5187', '4669', '9151', '6971', '5793', '2173', '2279', 'h', 'w', 't', '4769', '6581', 'D']

A: D18569674twh
****
Q: 19, 28, ['2809', '2943', '209', 'I', '4961', 'z', '6499', 'j', '8323', 'v', '6955', 'E', '2591', '5523', 'D', 'j', '3929', 'L', '501', 'Y', 'e', 'p', 'F', '1073', 'o', '3531', '9245', 'K']

A: K54291353o3701FpeY105
****
Q: 23, 25, ['1557', '5161', 's', '6231', '519', 'G', '8809', 'r', 'G', '4311', 'G', '8275', '6729', 'L', '7217', 'O', '401', '9255', 'r', 'R', '797', '5307', 'E', 'v', '3495', '3839']

A:
5943vE
****