-er -ey a-a a-b aaa aab aae aak aao aap aar aay ab- aba abb abe abk abo abp abr aby aea aeb aee aek aeo aep aer aey aka akb ake akk ako akp akr aoa aob aoe aok aoo aop aor ap- apa apb ape apk apo app apr apy ar- ara arb are ark aro arp arr ary ay- aya aye ayk ayo ayp ayr b-p baa bab bae bak bao bap bar bay bba bbb bbe bbk bbo bbp bbr bby be- bea beb bee bek beo bep ber bey bka bkb bke bkk bko bkp bkr boa bob boe bok boo bop bor boy bpa bpb bpe bpo bpp bpr bpy bra brb bre brk bro brp brr bry by- bya bye byk byo byp byr eaa eab eae eak eao eap ear eba ebb ebe ebk ebo ebp ebr eby eea eeb eee eek eeo eep eer eey eka ekb eke eko ekp ekr eky eo- eoa eob eoe eok eoo eop eor ep- epa epb epe epo epp epr era erb ere erk ero erp err ery eya eye eyo eyp eyr ka- kaa kab kae kak kao kap kar kay kba kbb kbe kbk kbo kbp kbr ke- kea keb kee kek keo kep ker key kkb kke kkk kkp kkr kky koa kob koe kok koo kop kor koy kpa kpe kpk kpo kpp kpr kra krk kro krp krr kry kya kye kyo kyp kyr oaa oab oae oak oao oap oar ob- oba obb obe obk obo obp obr oby oea oeb oee oeo oep oer oey oka okb oke okk oko okp okr oo- ooa oob ook ooo oop oor op- opa opb ope opk opo opp opr opy or- ora orb ore ork oro orp orr ory oya oye oyo p-p paa pab pae pak pao pap par pay pba pbb pbe pbk pbo pbp pbr pby pea peb pee pek peo pep per pey pka pkb pke pko pkp pkr pky poa pob poe pok poo pop por poy ppa ppb ppe ppk ppo ppp ppr pra prb pre prk pro prp prr pry py- pya pyb pye pyk pyo pyr ra- raa rab rae rak rao rap rar ray rba rbb rbe rbk rbo rbp rbr re- rea reb ree rek reo rep rer rey rkb rke rkk rko rkp rky roa rob roe rok roo rop ror roy rpa rpb rpe rpk rpo rpp rpr rra rrb rrk rrp rrr ry- rya rye ryk ryo ryr ryy yaa yab yae yak yao yap yar yay ybe ybp ybr yby yea yeb yee yek yeo yep yer yey yka ykk yob yoe yok yoo yop yor yoy ypa ypo yra yre yro yrp yyb yye yyy