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.
4, 22, ['p', 'W', 'B', 'P', '6819', 'j', 'b', 'O', 'f', 'D', 'F', '3515', '513', '4691', 'T', '5641', '6733', '5299', 'U', '8353', 'a', 'A', '2103', '3347', '8719', 'v', 'b', 'f', 'g', '6015']