1--h-g--h-ghg--e-f-ge-fe-d

1--h-h-ghg--e-f-g-fe--d

1--fg-h-f--g-fe-d--f-g--g-f

1--f--f--fe-d--e-d--c-d-e--d

1--d--defgf-fd--f-ghg-hgf-ghghj-h