-er -ey a-a a-c aaa aac aae aag aap aar aas aay ac- aca acc ace acg acp acr acs acy aea aec aee aeg aep aer aes aey ag- aga agc age agg agp agr ags agy ap- apa apc ape apg app apr aps apy ar- ara arc are arg arp arr ars ary as- asa asc ase asg asp asr ass asy ay- aya ayc aye ayp ayr ays c-- caa cac cae cag cap car cas cay cca ccc cce ccg ccp ccr ccs ce- cea cec cee ceg cep cer ces cey cga cgc cge cgg cgp cgr cgs cgy cpa cpc cpe cpg cpp cpr cps cra crc cre crg crp crr crs cry csa csc cse csg csp csr css csy cya cyc cye cyg cyp cyr cys eaa eac eae eag eap ear eas ec- eca ecc ece ecg ecr ecs eea eec eee eeg eep eer ees eey ega egc ege egg egp egr egs egy ep- epa epc epe epg epp epr eps era erc ere erg erp err ers ery es- esa esc ese esg esp esr ess esy eya eyc eye eyp eyr eys g-p gaa gac gae gag gap gar gas gay gca gcc gce gcg gcp gcr gcs ge- gea gec gee geg gep ger ges gey gga ggc ggg ggp ggr ggs gpa gpc gpe gpg gpp gpr gps gra grc gre grg grp grr grs gry gsa gsc gse gsg gsp gsr gss gy- gya gye gyp gyr gys p-p paa pac pae pag pap par pas pay pca pcc pce pcg pcp pcr pcs pea pec pee peg pep per pes pey pga pgc pge pgg pgp pgr pgs pgy ppa ppc ppe ppg ppp ppr pps pra prc pre prg prp prr prs pry ps- psa psc pse psg psp psr pss psy py- pya pyc pye pyg pyr pys ra- raa rac rae rag rap rar ras ray rca rcc rce rcg rcp rcr rcs re- rea rec ree reg rep rer res rey rga rgc rge rgg rgp rgr rgs rpa rpc rpe rpg rpp rpr rps rra rrc rrg rrp rrr rrs rsa rsc rse rsg rsp rsr rss ry- rya ryc rye ryg ryr rys ryy saa sac sae sag sap sar sas say sca scc sce scg scp scr scs se- sea sec see seg sep ser ses sey sga sgc sge sgg sgp sgr sgs spa spc spe spg spp spr sps spy sr- sra src sre srg srp srr srs sry ss- ssa ssc sse ssg ssp ssr sss sy- sya syc sye syg syp syr sys yaa yac yae yag yap yar yas yay yca ycc yce ycp ycs ycy yea yec yee yeg yep yer yes yey yga ygc ypa ypg yps yra yrc yre yrg yrp yrs ysa ysc yse ysg ysp ysr yss ysy yyc yye yyg yys yyy