b-p bbb bbe bbk bbm bbo bbp bbs be- beb bee bek bem beo bep bes bkb bke bkk bkm bko bkp bks bmb bme bmk bmm bmo bmp bms bob boe bok bom boo bop bos bpb bpe bpm bpo bpp bps bsb bse bsk bsm bso bsp bss ebb ebe ebk ebm ebo ebp ebs eeb eee eek eem eeo eep ees ekb eke eko ekp eks em- emb eme emk emm emo emp ems eo- eob eoe eok eom eoo eop eos ep- epb epe epm epo epp eps es- esb ese esk esm eso esp ess kbb kbe kbk kbm kbo kbp kbs ke- keb kee kek kem keo kep kes kkb kke kkk kkm kkp kks kmb kme kmk kmm kmo kmp kms kob koe kok kom koo kop kos kpe kpk kpm kpo kpp kps ksb kse ksk ksm kso ksp kss m-o mbb mbe mbk mbm mbo mbp mbs meb mee mek mem meo mep mes mkb mke mkk mkm mko mkp mks mmb mme mmk mmm mmo mmp mms mob moe mok mom moo mop mos mpb mpe mpk mpm mpo mpp mps msb mse msk msm mso msp mss ob- obb obe obk obm obo obp obs oeb oee oem oeo oep oes okb oke okk oko okp oks om- omb ome omm omo omp oms oo- oob ook oom ooo oop oos op- opb ope opk opm opo opp ops os- osb ose osk osm oso osp oss p-p pbb pbe pbk pbm pbo pbp pbs peb pee pek pem peo pep pes pkb pke pkm pko pkp pks pmb pme pmk pmm pmo pmp pms pob poe pok pom poo pop pos ppb ppe ppk ppm ppo ppp pps ps- psb pse psk psm pso psp pss sbb sbe sbk sbm sbo sbp sbs se- seb see sek sem seo sep ses sk- skb ske skk skm sko skp sks smb sme smk smm smo smp sms sob soe sok som soo sop sos spb spe spk spm spo spp sps ss- ssb sse ssk ssm sso ssp sss