A baggage belt has a single row of slots. A SMALL bag occupies one slot; a LARGE bag occupies two adjacent slots. When a bag arrives, the handler places it at the first available position (the lowest-numbered slots) into which it fits. Bags are numbered by arrival order (bag 1 first, bag 2 next, ...); the number does not reveal the bag's size. A configuration lists the bag number in each slot from the start of the row; a vacant slot is shown as V. Bags may also leave (freeing their slots). Answer each question INDEPENDENTLY of the others.
Bags 1, 2, 3, 4 arrive, of which 1 and 3 are large and 2 and 4 are small. Bag 2 then leaves; then bag 5 (large) and bag 6 (small) arrive; then bag 1 leaves; then bag 7 (small) and bag 8 (large) arrive. Which of the following bags is then placed immediately next to bag 4?