a-a a-z aaa aak aao aap aar aas aay aaz aka akk ako akp akr aks aoa aok aoo aop aor aos ap- apa apk apo app apr aps apy ar- ara ark aro arp arr ars ary arz as- asa ask aso asp asr ass asy asz ay- aya ayk ayo ayp ayr ays ayz az- aza azo azp azs azy azz k-z ka- kaa kak kao kap kar kas kay kaz kkk kkp kkr kks kky koa kok koo kop kor kos koy koz kpa kpk kpo kpp kpr kps kra krk kro krp krr krs kry ksa ksk kso ksp ksr kss kya kyo kyp kyr kys kyz kzo kzy oaa oak oao oap oar oas oka okk oko okp okr oks oo- ooa ook ooo oop oor oos op- opa opk opo opp opr ops opy or- ora ork oro orp orr ors ory orz os- osa osk oso osp osr oss oya oyo oys oza ozo ozs ozz p-p paa pak pao pap par pas pay paz pka pko pkp pkr pks pky poa pok poo pop por pos poy poz ppa ppk ppo ppp ppr pps ppz pra prk pro prp prr prs pry prz ps- psa psk pso psp psr pss psy py- pya pyk pyo pyr pys pzk pzp ra- raa rak rao rap rar ras ray raz rkk rko rkp rks rky rkz roa rok roo rop ror ros roy roz rpa rpk rpo rpp rpr rps rpz rra rrk rrp rrr rrs rsa rsk rso rsp rsr rss ry- rya ryk ryo ryr rys ryy ryz rza rzo rzy saa sak sao sap sar sas say saz sk- ska skk sko skp skr sks sky soa sok soo sop sor sos soy soz spa spk spo spp spr sps spy spz sr- sra srk sro srp srr srs sry ss- ssa ssk sso ssp ssr sss ssz sy- sya syk syp syr sys sza szp szr yaa yak yao yap yar yas yay yaz yka ykk yok yoo yop yor yos yoy ypa ypo yps yra yro yrp yrs ysa ysk yso ysp ysr yss ysy ysz yys yyy yyz yzr yzy zaa zak zao zap zar zas zay zaz zka zks zo- zoa zok zoo zor zos zpo zpp zpr zro zrp zrs zsa zsz zzr zzs zzy zzz