a-a aaa aak aam aao aar aas aka akk akm ako akr aks ama amk amm amo amr ams aoa aok aom aoo aor aos ar- ara ark arm aro arr ars as- asa ask asm aso asr ass ka- kaa kak kam kao kar kas kkk kkm kkr kks kma kmk kmm kmo kms koa kok kom koo kor kos kra krk kro krr krs ksa ksk ksm kso ksr kss m-o m-r maa mak mam mao mar mas mka mkk mkm mko mkr mks mma mmk mmm mmo mmr mms moa mok mom moo mor mos mra mrk mrm mro mrr mrs msa msk msm mso msr mss oaa oak oam oao oar oas oka okk oko okr oks om- oma omm omo omr oms oo- ooa ook oom ooo oor oos or- ora ork orm oro orr ors os- osa osk osm oso osr oss ra- raa rak ram rao rar ras rkk rkm rko rks rma rmm rmo rmr rms roa rok rom roo ror ros rra rrk rrm rrr rrs rsa rsk rsm rso rsr rss saa sak sam sao sar sas sk- ska skk skm sko skr sks sma smk smm smo smr sms soa sok som soo sor sos sr- sra srk srm sro srr srs ss- ssa ssk ssm sso ssr sss