-er -ey b-p bbb bbc bbe bbk bbp bbr bby bcb bcc bce bck bcp bcr bcy be- beb bec bee bek bep ber bey bkb bkc bke bkk bkp bkr bpb bpc bpe bpp bpr bpy brb bre brk brp brr bry by- byc bye byk byp byr c-- cbb cbc cbe cbk cbp cbr cby ccb ccc cce cck ccp ccr ce- ceb cec cee cek cep cer cey ckb ckc cky cpb cpc cpe cpk cpp cpr crb crc cre crk crp crr cry cyb cyc cye cyk cyp cyr ebb ebc ebe ebk ebp ebr eby ec- ecb ecc ece eck ecr eeb eec eee eek eep eer eey ekb ekc eke ekp ekr eky ep- epb epc epe epp epr erb erc ere erk erp err ery eyc eye eyp eyr kbb kbc kbe kbk kbp kbr kcb kcc kce kck kcp kcr ke- keb kec kee kek kep ker key kkb kkc kke kkk kkp kkr kky kpc kpe kpk kpp kpr krc krk krp krr kry kyc kye kyp kyr p-p pbb pbc pbe pbk pbp pbr pby pcb pcc pce pck pcp pcr peb pec pee pek pep per pey pkb pkc pke pkp pkr pky ppb ppc ppe ppk ppp ppr prb prc pre prk prp prr pry py- pyb pyc pye pyk pyr rbb rbc rbe rbk rbp rbr rcb rcc rce rcp rcr re- reb rec ree rek rep rer rey rkb rkc rke rkk rkp rky rpb rpc rpe rpk rpp rpr rrb rrc rrk rrp rrr ry- ryc rye ryk ryr ryy ybc ybe ybp ybr yby ycc yce ycp ycy yeb yec yee yek yep yer yey ykk yrc yre yrp yyb yyc yye yyy