b-p bbb bbd bbe bbk bbo bbp bbs bdb bdd bde bdk bdo bdp bds be- beb bed bee bek beo bep bes bkb bke bkk bko bkp bks bob bod boe bok boo bop bos bpb bpd bpe bpo bpp bps bsb bsd bse bsk bso bsp bss dbb dbd dbe dbk dbo dbp dbs ddb ddd dde ddk ddo ddp dds de- deb ded dee dek deo dep des dkb dke dkk dko dkp dks dob dod doe dok doo dop dos dpb dpd dpe dpk dpo dpp dps dsb dsd dse dsk dso dsp dss ebb ebd ebe ebk ebo ebp ebs ed- edb edd ede edk edo edp eds eeb eed eee eek eeo eep ees ekb ekd eke eko ekp eks eo- eob eod eoe eok eoo eop eos ep- epb epd epe epo epp eps es- esb esd ese esk eso esp ess kbb kbd kbe kbk kbo kbp kbs kdb kde kdk kdo kdp kds ke- keb ked kee kek keo kep kes kkb kke kkk kkp kks kob kod koe kok koo kop kos kpd kpe kpk kpo kpp kps ksb ksd kse ksk kso ksp kss ob- obb obd obe obk obo obp obs odb odd ode odo odp ods oeb oed oee oeo oep oes okb okd oke okk oko okp oks oo- oob ood ook ooo oop oos op- opb opd ope opk opo opp ops os- osb osd ose osk oso osp oss p-p pbb pbd pbe pbk pbo pbp pbs pdb pdd pde pdk pdo pdp pds peb ped pee pek peo pep pes pkb pkd pke pko pkp pks pob pod poe pok poo pop pos ppb ppd ppe ppk ppo ppp pps ps- psb psd pse psk pso psp pss sbb sbd sbe sbk sbo sbp sbs sdb sdd sde sdk sdo sdp sds se- seb sed see sek seo sep ses sk- skb skd ske skk sko skp sks sob sod soe sok soo sop sos spb spd spe spk spo spp sps ss- ssb ssd sse ssk sso ssp sss