1----------------|------------------------------------------------------|
2----------------|------------------------------------------------------|
3----------------|----7-8-9----7-9---7----------------------------------|
4---10---10---10-|-10-------10-----9---10-------------------------------|
5-7----7----7----|------------------------------------------------------|
6----------------|------------------------------------------------------|
Beginning
1---|---|---------------------------------------------------------------|
2---|---|---------------------------------------------------------------|
3---|---|---------------------------------------------------------------|
4-7-|-8-|---------------------------------------------------------------|
5-5-|-6-|---------------------------------------------------------------|
6-5-|-6-|---------------------------------------------------------------|