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.
6, 25, ['4519', 'v', '4145', '5127', '3885', 'L', 'K', '8927', 'B', 'H', 'D', 'J', 'A', '195', '2549', 'J', 'D', 'r', 'h', 'g', 'C', 'q', '5437', '959', 's', 'i', '9019']