1--fe-d--f--gh-gf-f--gh-gf-e-e-e

1--fh-k-hk-lk--k-l--nml-k--j-klk-h

1--d-ef-d--f-g--h-gf-g-ghg--f-g

1--c-cd-d-dc--defdc-d--c-d-fgfed