b-p bbb bbd bbe bbn bbo bbp bdb bdd bde bdo bdp be- beb bed bee ben beo bep bnb bnd bne bnn bno bnp bob bod boe bon boo bop bpb bpd bpe bpn bpo bpp dbb dbd dbe dbn dbo dbp ddb ddd dde ddn ddo ddp de- deb ded dee den deo dep dnb dnd dne dnn dno dnp dob dod doe don doo dop dpb dpd dpe dpn dpo dpp ebb ebd ebe ebn ebo ebp ed- edb edd ede edn edo edp eeb eed eee een eeo eep en- enb end ene enn eno enp eo- eob eod eoe eon eoo eop ep- epb epd epe epn epo epp nbb nbd nbe nbn nbo nbp ndb ndd nde ndn ndo ndp ne- neb ned nee nen neo nep nnb nne nnn nno nnp no- nob nod noe non noo nop npb npd npe npn npo npp ob- obb obd obe obn obo obp odb odd ode odn odo odp oeb oed oee oen oeo oep on- onb ond one onn ono onp oo- oob ood oon ooo oop op- opb opd ope opn opo opp p-p pbb pbd pbe pbn pbo pbp pdb pdd pde pdn pdo pdp peb ped pee pen peo pep pn- pnb pnd pne pnn pno pnp pob pod poe pon poo pop ppb ppd ppe ppn ppo ppp