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.
3, 18, ['1717', 'Q', '8259', 'l', 'Z', '8655', '9041', 'M', 'm', '6517', 'L', '913', 'x', 'd', '5357', '9501', 's', '2423', '9121', '9343', '7189', '4451', 'j']