1--f-df-f-fgf-fded--f-ef-gh-g-g--g--g-gh-g

1--h-gfg-hghg-gefe--g-g-gh-g--g

1--cd-fg-hg-gef-dcd-def--dhjgf-hghj-hgh--fgh-hgf-ef-gfg-fghg