a-a a-t aaa aaf aak aan aao aar aas aat af- afa aff afk afn afo afr afs aft aka akk akn ako akr aks an- ana anf ank ann ano anr ans ant aoa aof aok aon aoo aor aos aot ar- ara arf ark arn aro arr ars art as- asa asf ask asn aso asr ass ast at- ata atf atn ato atr ats att faa faf fak fan fao far fas fat ffa fff ffk ffn ffo ffr ffs fft fka fkf fkk fkt fna fnf fnk fnn fnr fns fnt foa fof fok fon foo for fos fot fra frf frk frn fro frr frs frt fsa fsf fsk fsn fso fsr fss fst fta ftf ftk ftn fto ftr fts ftt k-t ka- kaa kaf kak kan kao kar kas kat kfa kff kfo kfs kkk kkn kkr kks kkt kn- kna knf knk knn kno knr knt koa kof kok kon koo kor kos kot kra krf krk krn kro krr krs krt ksa ksf ksk ksn kso ksr kss kst kta ktf ktk ktn kto ktr kts ktt naa naf nak nan nao nar nas nat nfa nff nfk nfn nfo nfr nfs nft nka nkf nkk nkn nko nkr nks nkt nna nnf nnk nnn nno nns nnt no- noa nof nok non noo nor nos not nra nrf nrk nrn nro nrr nrs nrt nsa nsf nsk nsn nso nsr nss nst nta ntf ntk ntn nto ntr nts ntt oaa oaf oak oan oao oar oas oat of- ofa off ofn ofo ofr ofs oft oka okk oko okr oks on- ona onf onk onn ono onr ons ont oo- ooa oof ook oon ooo oor oos oot or- ora orf ork orn oro orr ors ort os- osa osf osk osn oso osr oss ost ot- ota otf otk otn oto otr ots ott ra- raa raf rak ran rao rar ras rat rfa rff rfk rfn rfo rfr rfs rft rkf rkk rko rks rkt rna rnn rno rnr rns rnt roa rof rok ron roo ror ros rot rra rrf rrk rrn rrr rrs rrt rsa rsf rsk rsn rso rsr rss rst rta rtf rtk rtn rto rtr rts rtt saa saf sak san sao sar sas sat sfa sff sfk sfn sfo sfr sfs sft sk- ska skf skk sko skr sks skt sna snf snk snn sno snr sns snt soa sof sok son soo sor sos sot sr- sra srf srk srn sro srr srs srt ss- ssa ssf ssk ssn sso ssr sss sst sta stf stk stn sto str sts stt taa taf tak tan tao tar tas tat tfa tff tfk tfn tfo tfr tfs tft tka tkk tko tkr tks tkt tna tnf tnk tnn tno tnr tns tnt to- toa tof tok ton too tor tos tot tra trf trk trn tro trr trs trt tsa tsf tsk tsn tso tsr tss tst tta ttf ttk ttn tto ttr tts ttt