b-p bbb bbe bbh bbo bbp be- beb bee beh beo bep bhb bhe bhh bho bhp bob boe boh boo bop bpb bpe bph bpo bpp ebb ebe ebh ebo ebp eeb eee eeo eep ehb ehe ehh eho ehp eo- eob eoe eoh eoo eop ep- epb epe eph epo epp hbb hbe hbh hbo hbp he- heb hee heh heo hep hhb hhe hhh hho hhp hob hoe hoh hoo hop hpb hpe hph hpo hpp ob- obb obe obh obo obp oeb oee oeh oeo oep ohe ohh oho ohp oo- oob ooh ooo oop op- opb ope oph opo opp p-p pbb pbe pbo pbp peb pee peh peo pep phb phe pho php pob poe poh poo pop ppb ppe pph ppo ppp