-er b-p bbb bbe bbk bbo bbp bbr be- beb bee bek beo bep ber bjj bjk bjp bjr bkb bke bkk bko bkp bkr bob boe boj bok boo bop bor bpb bpe bpo bpp bpr brb bre brj brk bro brp brr ebb ebe ebj ebk ebo ebp ebr eeb eee eek eeo eep eer ejo ejp ekb eke eko ekp ekr eo- eob eoe eok eoo eop eor ep- epb epe epo epp epr erb ere erk ero erp err jbj jbk jbo jbr jeb jee jej jek jeo jep jer jjb jjj jjk jjp jjr jkb jkk jko jkp jkr job joe joj jok joo jop jor jpb jpe jpj jpo jpp jpr jrb jrk jro jrp jrr kbb kbe kbk kbo kbp kbr ke- keb kee kek keo kep ker kjb kje kjr kkb kke kkk kkp kkr kob koe kok koo kop kor kpe kpk kpo kpp kpr krk kro krp krr ob- obb obe obj obk obo obp obr oeb oee oeo oep oer ojb oje ojo okb oke okj okk oko okp okr oo- oob ook ooo oop oor op- opb ope opj opk opo opp opr or- orb ore ork oro orp orr p-p pbb pbe pbj pbk pbo pbp pbr peb pee pek peo pep per pjo pjp pkb pke pko pkp pkr pob poe pok poo pop por ppb ppe ppj ppk ppo ppp ppr prb pre prk pro prp prr rbb rbe rbk rbo rbp rbr re- reb ree rek reo rep rer rjk rjp rjr rkb rke rkk rko rkp rob roe roj rok roo rop ror rpb rpe rpk rpo rpp rpr rrb rrk rrp rrr