a-a a-c a-t aaa aac aap aar aas aat aay ac- aca acc acp acr acs act acy ap- apa apc app apr aps apt apy ar- ara arc arp arr ars art ary as- asa asc asp asr ass ast asy at- ata atc atp atr ats att ay- aya ayc ayp ayr ays ayt c-- caa cac cap car cas cat cay cca ccc ccp ccr ccs cct cpa cpc cpp cpr cps cpt cra crc crp crr crs crt cry csa csc csp csr css cst csy cta ctc ctp ctr cts ctt cty cya cyc cyp cyr cys cyt p-p paa pac pap par pas pat pay pca pcc pcp pcr pcs pct ppa ppc ppp ppr pps ppt pra prc prp prr prs prt pry ps- psa psc psp psr pss pst psy pt- pta ptc ptp ptr pts ptt pty py- pya pyc pyr pys pyt ra- raa rac rap rar ras rat ray rca rcc rcp rcr rcs rct rpa rpc rpp rpr rps rpt rra rrc rrp rrr rrs rrt rsa rsc rsp rsr rss rst rta rtc rtp rtr rts rtt rty ry- rya ryc ryr rys ryy saa sac sap sar sas sat say sca scc scp scr scs sct spa spc spp spr sps spt spy sr- sra src srp srr srs srt sry ss- ssa ssc ssp ssr sss sst sta stc stp str sts stt sty sy- sya syc syp syr sys syt taa tac tap tar tas tat tay tca tcc tcp tcr tcs tct tpa tpc tpp tpr tps tpt tra trc trp trr trs trt try tsa tsc tsp tsr tss tst tsy tta ttc ttp ttr tts ttt tty tya tyc typ tyr tys tyt yaa yac yap yar yas yat yay yca ycc ycp ycs ycy ypa yps yra yrc yrp yrs yrt ysa ysc ysp ysr yss yst ysy yta ytc ytp ytr yts ytt yyc yys yyt yyy