bbb bbc bbe bbg bbh bbo bcb bcc bce bcg bch bco be- beb bec bee beg beh beo bgb bgc bge bgg bgh bgo bhb bhc bhe bhg bhh bho bob boc boe bog boh boo c-- cbb cbc cbe cbg cbh cbo ccb ccc cce ccg cch cco ce- ceb cec cee ceg ceh ceo cgb cgc cge cgg cgh cgo ch- chb chc che chg chh cho co- cob coc coe cog coh coo ebb ebc ebe ebg ebh ebo ec- ecb ecc ece ecg ech eco eeb eec eee eeg eeo egb egc ege egg egh ego ehb ehc ehe ehg ehh eho eo- eob eoc eoe eog eoh eoo gbc gbe gbg gbh gbo gcb gcc gce gcg gch gco ge- geb gec gee geg geh geo ggb ggc ggg ggh ggo ghb ghc ghe ghg ghh gho gob goc goe gog goh goo hbb hbc hbe hbg hbh hbo hcb hcc hce hcg hch hco he- heb hec hee heg heh heo hgb hgc hge hgg hgh hgo hhb hhc hhe hhg hhh hho hob hoc hoe hog hoh hoo ob- obb obc obe obg obh obo oc- ocb occ ocg och oco oeb oec oee oeg oeh oeo ogc oge ogg ogh ogo ohc ohe ohg ohh oho oo- oob ooc oog ooh ooo