b-p bbb bbe bbk bbm bbn bbo bbp be- beb bee bek bem ben beo bep bkb bke bkk bkm bkn bko bkp bmb bme bmk bmm bmn bmo bmp bnb bne bnk bnn bno bnp bob boe bok bom bon boo bop bpb bpe bpm bpn bpo bpp ebb ebe ebk ebm ebn ebo ebp eeb eee eek eem een eeo eep ekb eke eko ekp em- emb eme emk emm emn emo emp en- enb ene enk enm enn eno enp eo- eob eoe eok eom eon eoo eop ep- epb epe epm epn epo epp kbb kbe kbk kbm kbn kbo kbp ke- keb kee kek kem ken keo kep kkb kke kkk kkm kkn kkp kmb kme kmk kmm kmo kmp kn- kne knk knm knn kno knp kob koe kok kom kon koo kop kpe kpk kpm kpn kpo kpp m-o mbb mbe mbk mbm mbo mbp meb mee mek mem men meo mep mkb mke mkk mkm mkn mko mkp mmb mme mmk mmm mmn mmo mmp mnb mne mnk mnm mnn mno mnp mob moe mok mom mon moo mop mpb mpe mpk mpm mpn mpo mpp nbb nbe nbk nbm nbn nbo nbp ne- neb nee nek nem nen neo nep nke nkk nkm nkn nko nkp nmb nme nmk nmm nmn nmo nmp nnb nne nnk nnm nnn nno nnp no- nob noe nok nom non noo nop npb npe npm npn npo npp ob- obb obe obk obm obn obo obp oeb oee oem oen oeo oep okb oke okk oko okp om- omb ome omm omn omo omp on- onb one onk onn ono onp oo- oob ook oom oon ooo oop op- opb ope opk opm opn opo opp p-p pbb pbe pbk pbm pbn pbo pbp peb pee pek pem pen peo pep pkb pke pkm pkn pko pkp pmb pme pmk pmm pmn pmo pmp pn- pnb pne pnk pnm pnn pno pnp pob poe pok pom pon poo pop ppb ppe ppk ppm ppn ppo ppp