-er -ey b-p bbb bbe bbk bbo bbp bbr bby be- beb bee bek beo bep ber bey bkb bke bkk bko bkp bkr bob boe bok boo bop bor boy bpb bpe bpo bpp bpr bpy brb bre brk bro brp brr bry by- bye byk byo byp byr ebb ebe ebk ebo ebp ebr eby eeb eee eek eeo eep eer eey ekb eke eko ekp ekr eky eo- eob eoe eok eoo eop eor ep- epb epe epo epp epr erb ere erk ero erp err ery eye eyo eyp eyr kbb kbe kbk kbo kbp kbr ke- keb kee kek keo kep ker key kkb kke kkk kkp kkr kky kob koe kok koo kop kor koy kpe kpk kpo kpp kpr krk kro krp krr kry kye kyo kyp kyr ob- obb obe obk obo obp obr oby oeb oee oeo oep oer oey okb oke okk oko okp okr oo- oob ook ooo oop oor op- opb ope opk opo opp opr opy or- orb ore ork oro orp orr ory oye oyo p-p pbb pbe pbk pbo pbp pbr pby peb pee pek peo pep per pey pkb pke pko pkp pkr pky pob poe pok poo pop por poy ppb ppe ppk ppo ppp ppr prb pre prk pro prp prr pry py- pyb pye pyk pyo pyr rbb rbe rbk rbo rbp rbr re- reb ree rek reo rep rer rey rkb rke rkk rko rkp rky rob roe rok roo rop ror roy rpb rpe rpk rpo rpp rpr rrb rrk rrp rrr ry- rye ryk ryo ryr ryy ybe ybp ybr yby yeb yee yek yeo yep yer yey ykk yob yoe yok yoo yop yor yoy ypo yre yro yrp yyb yye yyy