-al -ol a-a aaa aaf aak aal aan aao aar aas af- afa aff afk afl afn afo afr afs aka akk akl akn ako akr aks al- ala alf alk all aln alo alr als an- ana anf ank anl ann ano anr ans aoa aof aok aol aon aoo aor aos ar- ara arf ark arl arn aro arr ars as- asa asf ask asl asn aso asr ass faa faf fak fal fan fao far fas ffa fff ffk ffl ffn ffo ffr ffs fka fkf fkk fkl fla flf fll fln flo flr fls fna fnf fnk fnl fnn fnr fns foa fof fok fol fon foo for fos fra frf frk frl frn fro frr frs fsa fsf fsk fsl fsn fso fsr fss ka- kaa kaf kak kal kan kao kar kas kfa kff kfo kfs kkk kkl kkn kkr kks kl- kla klf klo klr kls kn- kna knf knk knl knn kno knr koa kof kok kol kon koo kor kos kra krf krk krl krn kro krr krs ksa ksf ksk ksl ksn kso ksr kss la- laa laf lak lal lan lao lar las lfa lff lfk lfl lfn lfo lfr lfs lka lkl lkr lks lla llf llk lll lln llo llr lls lna lnk lnl lnn lno lnr lns loa lof lok lol lon loo lor los lra lrf lrk lrn lro lrr lrs lsa lsf lsk lsl lsn lso lsr lss naa naf nak nal nan nao nar nas nfa nff nfk nfl nfn nfo nfr nfs nka nkf nkk nkn nko nkr nks nla nlf nlk nll nln nlo nlr nls nna nnf nnk nnl nnn nno nns no- noa nof nok nol non noo nor nos nra nrf nrk nrl nrn nro nrr nrs nsa nsf nsk nsl nsn nso nsr nss oaa oaf oak oal oan oao oar oas of- ofa off ofl ofn ofo ofr ofs oka okk okl oko okr oks ola olf olk oll oln olo ols on- ona onf onk onl onn ono onr ons oo- ooa oof ook ool oon ooo oor oos or- ora orf ork orl orn oro orr ors os- osa osf osk osl osn oso osr oss ra- raa raf rak ral ran rao rar ras rfa rff rfk rfl rfn rfo rfr rfs rkf rkk rko rks rla rlf rll rln rlo rlr rls rna rnn rno rnr rns roa rof rok rol ron roo ror ros rra rrf rrk rrl rrn rrr rrs rsa rsf rsk rsl rsn rso rsr rss saa saf sak sal san sao sar sas sfa sff sfk sfl sfn sfo sfr sfs sk- ska skf skk skl sko skr sks sla slf slk sll sln slo slr sls sna snf snk snl snn sno snr sns soa sof sok sol son soo sor sos sr- sra srf srk srl srn sro srr srs ss- ssa ssf ssk ssl ssn sso ssr sss