-er b-p bbb bbe bbk bbo bbp bbr bbt be- beb bee bek beo bep ber bet bjj bjk bjp bjr bjt bkb bke bkk bko bkp bkr bkt bob boe boj bok boo bop bor bot bpb bpe bpo bpp bpr bpt brb bre brj brk bro brp brr brt btb bte btk bto btp btr btt ebb ebe ebj ebk ebo ebp ebr ebt eeb eee eek eeo eep eer eet ejo ejp ejt ekb eke eko ekp ekr ekt eo- eob eoe eok eoo eop eor eot ep- epb epe epo epp epr ept erb ere erk ero erp err ert etb ete etj etk eto etp etr ett jbj jbk jbo jbr jbt jeb jee jej jek jeo jep jer jet jjb jjj jjk jjp jjr jkb jkk jko jkp jkr jkt job joe joj jok joo jop jor jot jpb jpe jpj jpo jpp jpr jpt jrb jrk jro jrp jrr jrt jtb jte jtk jtp jtr jtt k-t kbb kbe kbk kbo kbp kbr ke- keb kee kek keo kep ker ket kjb kje kjr kkb kke kkk kkp kkr kkt kob koe kok koo kop kor kot kpe kpk kpo kpp kpr kpt krk kro krp krr krt ktb kte ktj ktk kto ktp ktr ktt ob- obb obe obj obk obo obp obr obt oeb oee oeo oep oer oet ojb oje ojo okb oke okj okk oko okp okr oo- oob ook ooo oop oor oot op- opb ope opj opk opo opp opr opt or- orb ore ork oro orp orr ort ot- otb ote otk oto otp otr ott p-p pbb pbe pbj pbk pbo pbp pbr pbt peb pee pek peo pep per pet pjo pjp pkb pke pko pkp pkr pkt pob poe pok poo pop por pot ppb ppe ppj ppk ppo ppp ppr ppt prb pre prk pro prp prr prt pt- ptb pte ptj ptk pto ptp ptr ptt rbb rbe rbk rbo rbp rbr rbt re- reb ree rek reo rep rer ret rjk rjp rjr rkb rke rkk rko rkp rkt rob roe roj rok roo rop ror rot rpb rpe rpk rpo rpp rpr rpt rrb rrk rrp rrr rrt rtb rte rtj rtk rto rtp rtr rtt tbb tbe tbj tbk tbo tbp tbr tbt te- teb tee tej tek teo tep ter tet tje tjo tjp tjr tkb tke tkk tko tkp tkr tkt to- tob toe toj tok too top tor tot tpb tpe tpj tpk tpo tpp tpr tpt trb tre trk tro trp trr trt ttb tte ttk tto ttp ttr ttt