-er -ey a-a a-c aaa aac aae aag aap aar aay ac- aca acc ace acg acp acr acy aea aec aee aeg aep aer aey ag- aga agc age agg agp agr agy ap- apa apc ape apg app apr apy ar- ara arc are arg arp arr ary ay- aya ayc aye ayp ayr c-- caa cac cae cag cap car cay cca ccc cce ccg ccp ccr ce- cea cec cee ceg cep cer cey cga cgc cge cgg cgp cgr cgy cpa cpc cpe cpg cpp cpr cra crc cre crg crp crr cry cya cyc cye cyg cyp cyr eaa eac eae eag eap ear ec- eca ecc ece ecg ecr eea eec eee eeg eep eer eey ega egc ege egg egp egr egy ep- epa epc epe epg epp epr era erc ere erg erp err ery eya eyc eye eyp eyr g-p gaa gac gae gag gap gar gay gca gcc gce gcg gcp gcr ge- gea gec gee geg gep ger gey gga ggc ggg ggp ggr gpa gpc gpe gpg gpp gpr gra grc gre grg grp grr gry gy- gya gye gyp gyr p-p paa pac pae pag pap par pay pca pcc pce pcg pcp pcr pea pec pee peg pep per pey pga pgc pge pgg pgp pgr pgy ppa ppc ppe ppg ppp ppr pra prc pre prg prp prr pry py- pya pyc pye pyg pyr ra- raa rac rae rag rap rar ray rca rcc rce rcg rcp rcr re- rea rec ree reg rep rer rey rga rgc rge rgg rgp rgr rpa rpc rpe rpg rpp rpr rra rrc rrg rrp rrr ry- rya ryc rye ryg ryr ryy yaa yac yae yag yap yar yay yca ycc yce ycp ycy yea yec yee yeg yep yer yey yga ygc ypa ypg yra yrc yre yrg yrp yyc yye yyg yyy