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.
14, 20, ['993', 'h', '1547', '3175', '7625', 'R', '6147', '8383', 'N', 'E', '5345', 'R', '8387', '9063', '9881', '3493', '5689', 'j', 'U', '7081', 'x', 'h', '1401', '1881']