A Television programmer is arranging the order that three movies will be seen between the hours of 6 PM and 12 AM. Two of the movies have a G Rating, and they are to be shown in the first two time blocks. One of the momvies is rated NC-17, and it is to be shown in the last of the time blocks, from 10 PM until 12 AM. Given these restrrictions, inhow many ways can the three movies be arranged during the indicated time blocks?