2 5 7 9 1 3 1 NO ITINERARY POSSIBLE 1 3 4 5 NO ITINERARY POSSIBLE NO ITINERARY POSSIBLE NO ITINERARY POSSIBLE NO ITINERARY POSSIBLE NO ITINERARY POSSIBLE 0 0 0 0 0 1 2 3 4 0 0 0 0 0 1 2 3 4 1 2 3 4 5 1 2 3 4 5 1 1 2 3 4 2 2 3 3 4 NO ITINERARY POSSIBLE NO ITINERARY POSSIBLE 1 3 5 9 3 6 8 9 NO ITINERARY POSSIBLE NO ITINERARY POSSIBLE