a-a a-i a-t aaa aaf aag aai aak aao aar aas aat af- afa aff afg afi afk afo afr afs aft ag- aga agf agg agi agk ago agr ags agt ai- aia aif aig aii aik aio air ais ait aka akg aki akk ako akr aks aoa aof aog aoi aok aoo aor aos aot ar- ara arf arg ari ark aro arr ars art as- asa asf asg asi ask aso asr ass ast at- ata atf atg ati ato atr ats att faa faf fag fai fak fao far fas fat ffa fff ffg ffi ffk ffo ffr ffs fft fga fgf fgg fgi fgr fgs fgt fia fif fig fii fik fir fis fit fka fkf fkg fki fkk fkt foa fof fog foi fok foo for fos fot fra frf frg fri frk fro frr frs frt fsa fsf fsg fsi fsk fso fsr fss fst fta ftf ftg fti ftk fto ftr fts ftt gaa gaf gag gai gak gao gar gas gat gfa gff gfi gfk gfo gfr gfs gft gga ggg ggi ggo ggr ggs ggt gia gif gig gii gik gio gir gis git gka gko gks gkt goa gof gog goi gok goo gor gos got gra grf grg gri grk gro grr grs grt gsa gsf gsg gsi gsk gso gsr gss gst gta gtf gtg gti gtk gto gtr gts gtt i-f ia- iaa iaf iag iai iao iar ias iat ifa iff ifg ifi ifo ifr ifs ift iga igf igg igi igk igo igr igs igt iia iif iii iio iir iis iit ika ikf iki ikk iko ikr iks ikt io- ioa iof iog ioi ioo ior ios iot ir- ira irf irg iri irk iro irr irs irt is- isa isf isg isi isk iso isr iss ist ita itf itg iti itk ito its itt k-t ka- kaa kaf kag kai kak kao kar kas kat kfa kff kfg kfi kfo kfs kga kgf kgi kgo kgs kia kif kig kii kik kio kir kis kit kki kkk kkr kks kkt koa kof kog koi kok koo kor kos kot kra krf krg kri krk kro krr krs krt ksa ksf ksg ksi ksk kso ksr kss kst kta ktf ktg ktk kto ktr kts ktt o-i oaa oaf oag oai oak oao oar oas oat of- ofa off ofg ofi ofo ofr ofs oft oga ogf ogg ogi ogo ogs ogt oia oif oii oik oio oir ois oit oka okg oki okk oko okr oks oo- ooa oof oog ooi ook ooo oor oos oot or- ora orf org ori ork oro orr ors ort os- osa osf osg osi osk oso osr oss ost ot- ota otf otg oti otk oto otr ots ott ra- raa raf rag rai rak rao rar ras rat rfa rff rfg rfi rfk rfo rfr rfs rft rga rgf rgg rgi rgk rgo rgr rgs rgt ria rif rig rii rik rio rir ris rit rkf rkg rkk rko rks rkt roa rof rog roi rok roo ror ros rot rra rrf rrg rri rrk rrr rrs rrt rsa rsf rsg rsi rsk rso rsr rss rst rta rtf rtg rti rtk rto rtr rts rtt saa saf sag sai sak sao sar sas sat sfa sff sfg sfi sfk sfo sfr sfs sft sga sgf sgg sgi sgk sgo sgr sgs sgt sia sif sig sii sik sio sir sis sit sk- ska skf skg ski skk sko skr sks skt soa sof sog soi sok soo sor sos sot sr- sra srf srg sri srk sro srr srs srt ss- ssa ssf ssg ssi ssk sso ssr sss sst sta stf stg sti stk sto str sts stt taa taf tag tai tak tao tar tas tat tfa tff tfg tfi tfk tfo tfr tfs tft tga tgf tgg tgi tgk tgo tgr tgs tgt tia tif tig tii tik tio tir tis tit tka tkg tkk tko tkr tks tkt to- toa tof tog toi tok too tor tos tot tra trf trg tri trk tro trr trs trt tsa tsf tsg tsi tsk tso tsr tss tst tta ttf ttg tti ttk tto ttr tts ttt