a-a a-c a-t aaa aac aaf aao aar aas aat aay ac- aca acc acf aco acr acs act acy af- afa afc aff afo afr afs aft afy aoa aoc aof aoo aor aos aot ar- ara arc arf aro arr ars art ary as- asa asc asf aso asr ass ast asy at- ata atc atf ato atr ats att ay- aya ayc ayf ayo ayr ays ayt c-- caa cac caf cao car cas cat cay cca ccc ccf cco ccr ccs cct cfa cfc cff cfo cfr cfs cft co- coa coc cof coo cor cos cot coy cra crc crf cro crr crs crt cry csa csc csf cso csr css cst csy cta ctc ctf cto ctr cts ctt cty cya cyc cyf cyo cyr cys cyt faa fac faf fao far fas fat fay fca fcc fcf fco fcr fcs fct fcy ffa ffc fff ffo ffr ffs fft ffy foa foc fof foo for fos fot foy fra frc frf fro frr frs frt fry fsa fsc fsf fso fsr fss fst fta ftc ftf fto ftr fts ftt fty fy- fya fyc fyo oaa oac oaf oao oar oas oat oc- oca occ ocf oco ocr ocs oct of- ofa ofc off ofo ofr ofs oft oo- ooa ooc oof ooo oor oos oot or- ora orc orf oro orr ors ort ory os- osa osc osf oso osr oss ost ot- ota otc otf oto otr ots ott oya oyo oys ra- raa rac raf rao rar ras rat ray rca rcc rcf rco rcr rcs rct rfa rfc rff rfo rfr rfs rft roa roc rof roo ror ros rot roy rra rrc rrf rrr rrs rrt rsa rsc rsf rso rsr rss rst rta rtc rtf rto rtr rts rtt rty ry- rya ryc ryf ryo ryr rys ryy saa sac saf sao sar sas sat say sca scc scf sco scr scs sct sfa sfc sff sfo sfr sfs sft soa soc sof soo sor sos sot soy sr- sra src srf sro srr srs srt sry ss- ssa ssc ssf sso ssr sss sst sta stc stf sto str sts stt sty sy- sya syc syr sys syt taa tac taf tao tar tas tat tay tca tcc tcf tco tcr tcs tct tfa tfc tff tfo tfr tfs tft to- toa toc tof too tor tos tot toy tra trc trf tro trr trs trt try tsa tsc tsf tso tsr tss tst tsy tta ttc ttf tto ttr tts ttt tty tya tyc tyf tyo tyr tys tyt yaa yac yaf yao yar yas yat yay yca ycc ycf yco ycs ycy yfa yfc yff yfr yfs yft yoc yof yoo yor yos yot yoy yra yrc yrf yro yrs yrt ysa ysc yso ysr yss yst ysy yta ytc ytf yto ytr yts ytt yyc yyf yys yyt yyy