a-a a-c a-t aaa aac aaf aaj aak aao aar aas aat ac- aca acc acf acj ack aco acr acs act af- afa afc aff afj afk afo afr afs aft aja ajc ajf ajj ajk ajo ajr ajs ajt aka akc akj akk ako akr aks aoa aoc aof aoj aok aoo aor aos aot ar- ara arc arf arj ark aro arr ars art as- asa asc asf asj ask aso asr ass ast at- ata atc atf ato atr ats att c-- c-j caa cac caf caj cak cao car cas cat cca ccc ccf ccj cck cco ccr ccs cct cfa cfc cff cfk cfo cfr cfs cft cja cjc cjf cjk cjr cjs cka ckc cko cks ckt co- coa coc cof coj cok coo cor cos cot cra crc crf crj crk cro crr crs crt csa csc csf csj csk cso csr css cst cta ctc ctf ctk cto ctr cts ctt faa fac faf faj fak fao far fas fat fca fcc fcf fcj fck fco fcr fcs fct ffa ffc fff ffk ffo ffr ffs fft fja fjc fjs fka fkc fkf fkj fkk fkt foa foc fof fok foo for fos fot fra frc frf frj frk fro frr frs frt fsa fsc fsf fsj fsk fso fsr fss fst fta ftc ftf ftk fto ftr fts ftt jaa jac jaf jaj jak jao jar jas jat jca jcc jcf jck jco jcr jcs jct jfa jfc jff jfj jfk jfo jfr jfs jft jja jjc jjf jjj jjk jjr jjs jka jkk jko jkr jks jkt joa joc jof joj jok joo jor jos jot jra jrc jrf jrk jro jrr jrs jrt jsa jsc jsf jsj jsk jso jsr jss jst jta jtc jtf jtk jtr jts jtt k-t ka- kaa kac kaf kaj kak kao kar kas kat kca kcc kck kcr kcs kct kfa kfc kff kfo kfs kjc kjr kjs kkc kkk kkr kks kkt koa koc kof kok koo kor kos kot kra krc krf krk kro krr krs krt ksa ksc ksf ksk kso ksr kss kst kta ktc ktf ktj ktk kto ktr kts ktt oaa oac oaf oaj oak oao oar oas oat oc- oca occ ocf ocj ock oco ocr ocs oct of- ofa ofc off ofo ofr ofs oft oja ojc ojo ojs oka okc okj okk oko okr oks oo- ooa ooc oof ook ooo oor oos oot or- ora orc orf ork oro orr ors ort os- osa osc osf osj osk oso osr oss ost ot- ota otc otf otk oto otr ots ott ra- raa rac raf raj rak rao rar ras rat rca rcc rcf rcj rco rcr rcs rct rfa rfc rff rfj rfk rfo rfr rfs rft rja rjc rjf rjk rjr rkc rkf rkk rko rks rkt roa roc rof roj rok roo ror ros rot rra rrc rrf rrk rrr rrs rrt rsa rsc rsf rsj rsk rso rsr rss rst rta rtc rtf rtj rtk rto rtr rts rtt saa sac saf saj sak sao sar sas sat sca scc scf scj sck sco scr scs sct sfa sfc sff sfj sfk sfo sfr sfs sft sja sjc sjf sjj sjk sjr sjs sjt sk- ska skc skf skj skk sko skr sks skt soa soc sof soj sok soo sor sos sot sr- sra src srf srj srk sro srr srs srt ss- ssa ssc ssf ssj ssk sso ssr sss sst sta stc stf stj stk sto str sts stt taa tac taf taj tak tao tar tas tat tca tcc tcf tcj tck tco tcr tcs tct tfa tfc tff tfj tfk tfo tfr tfs tft tjc tjf tjo tjr tjs tka tkc tkk tko tkr tks tkt to- toa toc tof toj tok too tor tos tot tra trc trf trk tro trr trs trt tsa tsc tsf tsj tsk tso tsr tss tst tta ttc ttf ttk tto ttr tts ttt