a-a a-c aaa aac aag aao aap aar aas aay ac- aca acc acg aco acp acr acs acy ag- aga agc agg ago agp agr ags agy aoa aoc aog aoo aop aor aos ap- apa apc apg apo app apr aps apy ar- ara arc arg aro arp arr ars ary as- asa asc asg aso asp asr ass asy ay- aya ayc ayo ayp ayr ays c-- caa cac cag cao cap car cas cay cca ccc ccg cco ccp ccr ccs cga cgc cgg cgo cgp cgr cgs cgy co- coa coc cog coo cop cor cos coy cpa cpc cpg cpo cpp cpr cps cra crc crg cro crp crr crs cry csa csc csg cso csp csr css csy cya cyc cyg cyo cyp cyr cys g-p gaa gac gag gao gap gar gas gay gca gcc gcg gco gcp gcr gcs gga ggc ggg ggo ggp ggr ggs goa goc gog goo gop gor gos goy gpa gpc gpg gpo gpp gpr gps gra grc grg gro grp grr grs gry gsa gsc gsg gso gsp gsr gss gy- gya gyo gyp gyr gys oaa oac oag oao oap oar oas oc- oca occ ocg oco ocp ocr ocs oga ogc ogg ogo ogp ogs ogy oo- ooa ooc oog ooo oop oor oos op- opa opc opg opo opp opr ops opy or- ora orc org oro orp orr ors ory os- osa osc osg oso osp osr oss oya oyo oys p-p paa pac pag pao pap par pas pay pca pcc pcg pco pcp pcr pcs pga pgc pgg pgo pgp pgr pgs pgy poa poc pog poo pop por pos poy ppa ppc ppg ppo ppp ppr pps pra prc prg pro prp prr prs pry ps- psa psc psg pso psp psr pss psy py- pya pyc pyg pyo pyr pys ra- raa rac rag rao rap rar ras ray rca rcc rcg rco rcp rcr rcs rga rgc rgg rgo rgp rgr rgs roa roc rog roo rop ror ros roy rpa rpc rpg rpo rpp rpr rps rra rrc rrg rrp rrr rrs rsa rsc rsg rso rsp rsr rss ry- rya ryc ryg ryo ryr rys ryy saa sac sag sao sap sar sas say sca scc scg sco scp scr scs sga sgc sgg sgo sgp sgr sgs soa soc sog soo sop sor sos soy spa spc spg spo spp spr sps spy sr- sra src srg sro srp srr srs sry ss- ssa ssc ssg sso ssp ssr sss sy- sya syc syg syp syr sys yaa yac yag yao yap yar yas yay yca ycc yco ycp ycs ycy yga ygc ygo yoc yog yoo yop yor yos yoy ypa ypg ypo yps yra yrc yrg yro yrp yrs ysa ysc ysg yso ysp ysr yss ysy yyc yyg yys yyy