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.
9, 16, ['U', '7891', 'w', '8733', 'q', 'S', '5643', 's', '3443', 'w', 'O', '7941', 'S', 'v', 'D', '8037', 'B', '4321', '7193', 'u', 'V', 'G', '7493', 'V', '4543', 'J']