1--efd--cf-f--fg-gf-g-ghg-f-f--fgh-jh-gh

1--g-jk-l-l--m--o-lm-l--jkl-l--kj-h

1--c-d-dhj-h-h--h-h-g-h-gf--gh-h

1--g-f-d-fe-fg--hg--fe-fg-g--hkjh--gf-fg-g