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.
20, 24, ['o', '2721', '3419', 'u', '357', '5829', 'L', 'C', '8007', 'V', 'N', 'q', 'P', 'E', 'Y', '9369', 'f', '8041', 'u', 'm', 'v', '4911', '303', '3685', '8109', 'O', 'k', 'l', '9155', '7049']