a-a aaa aaf aaj aak aao aar aas aav af- afa aff afj afk afo afr afs afv aja ajf ajj ajk ajo ajr ajs aka akj akk ako akr aks akv aoa aof aoj aok aoo aor aos aov ar- ara arf arj ark aro arr ars arv as- asa asf asj ask aso asr ass asv av- ava avf avk avo avr avs faa faf faj fak fao far fas fav ffa fff ffk ffo ffr ffs ffv fja fjs fka fkf fkj fkk foa fof fok foo for fos fra frf frj frk fro frr frs fsa fsf fsj fsk fso fsr fss fsv fva fvk jaa jaf jaj jak jao jar jas jav jfa jff jfj jfk jfo jfr jfs jja jjf jjj jjk jjr jjs jka jkk jko jkr jks jkv joa jof joj jok joo jor jos jra jrf jrk jro jrr jrs jsa jsf jsj jsk jso jsr jss jsv jvs ka- kaa kaf kaj kak kao kar kas kav kfa kff kfo kfs kjr kjs kkk kkr kks kkv koa kof kok koo kor kos kra krf krk kro krr krs krv ksa ksf ksk kso ksr kss ksv kva kvk kvo kvr kvs kvv oaa oaf oaj oak oao oar oas oav of- ofa off ofo ofr ofs ofv oja ojo ojs oka okj okk oko okr oks oo- ooa oof ook ooo oor oos oov or- ora orf ork oro orr ors orv os- osa osf osj osk oso osr oss osv ov- ova ovf ovo ovs ovv ra- raa raf raj rak rao rar ras rav rfa rff rfj rfk rfo rfr rfs rfv rja rjf rjk rjr rkf rkk rko rks rkv roa rof roj rok roo ror ros rov rra rrf rrk rrr rrs rsa rsf rsj rsk rso rsr rss rsv rva rvf rvo rvr rvs rvv saa saf saj sak sao sar sas sav sfa sff sfj sfk sfo sfr sfs sfv sja sjf sjj sjk sjr sjs sk- ska skf skj skk sko skr sks soa sof soj sok soo sor sos sov sr- sra srf srj srk sro srr srs srv ss- ssa ssf ssj ssk sso ssr sss ssv sva svf svk svo svr svs svv v-a vaa vaj vak vao var vas vav vfa vff vfr vfs vfv vja vjs vka voa vof vok voo vor vos vov vra vrf vrk vrr vrs vsa vsf vsk vso vsr vss vsv vva vvo vvr vvs vvv