b-p bbb bbd bbe bbo bbp bdb bdd bde bdo bdp bdz be- beb bed bee beo bep bez bob bod boe boo bop boz bpb bpd bpe bpo bpp bzd bze bzo bzp bzz dbb dbd dbe dbo dbp dbz ddb ddd dde ddo ddp ddz de- deb ded dee deo dep dez dob dod doe doo dop doz dpb dpd dpe dpo dpp dpz dzb dzd dze dzo dzp ebb ebd ebe ebo ebp ed- edb edd ede edo edp eeb eed eee eeo eep eo- eob eod eoe eoo eop ep- epb epd epe epo epp epz eze ezo ezz ob- obb obd obe obo obp odb odd ode odo odp oeb oed oee oeo oep oo- oob ood ooo oop op- opb opd ope opo opp oze ozo ozz p-p pbb pbd pbe pbo pbp pbz pdb pdd pde pdo pdp pdz peb ped pee peo pep pez pob pod poe poo pop poz ppb ppd ppe ppo ppp ppz pzp zbb zeb zed zee zeo zep zez zo- zob zod zoe zoo zpe zpo zpp zzz