-er -ey a-a a-c aaa aac aae aag aao aap aar aay ac- aca acc ace acg aco acp acr acy aea aec aee aeg aeo aep aer aey ag- aga agc age agg ago agp agr agy aoa aoc aoe aog aoo aop aor ap- apa apc ape apg apo app apr apy ar- ara arc are arg aro arp arr ary ay- aya ayc aye ayo ayp ayr c-- caa cac cae cag cao cap car cay cca ccc cce ccg cco ccp ccr ce- cea cec cee ceg ceo cep cer cey cga cgc cge cgg cgo cgp cgr cgy co- coa coc coe cog coo cop cor coy cpa cpc cpe cpg cpo cpp cpr cra crc cre crg cro crp crr cry cya cyc cye cyg cyo cyp cyr eaa eac eae eag eao eap ear ec- eca ecc ece ecg eco ecr eea eec eee eeg eeo eep eer eey ega egc ege egg ego egp egr egy eo- eoa eoc eoe eog eoo eop eor ep- epa epc epe epg epo epp epr era erc ere erg ero erp err ery eya eyc eye eyo eyp eyr g-p gaa gac gae gag gao gap gar gay gca gcc gce gcg gco gcp gcr ge- gea gec gee geg geo gep ger gey gga ggc ggg ggo ggp ggr goa goc goe gog goo gop gor goy gpa gpc gpe gpg gpo gpp gpr gra grc gre grg gro grp grr gry gy- gya gye gyo gyp gyr oaa oac oae oag oao oap oar oc- oca occ ocg oco ocp ocr oea oec oee oeg oeo oep oer oey oga ogc oge ogg ogo ogp ogy oo- ooa ooc oog ooo oop oor op- opa opc ope opg opo opp opr opy or- ora orc ore org oro orp orr ory oya oye oyo p-p paa pac pae pag pao pap par pay pca pcc pce pcg pco pcp pcr pea pec pee peg peo pep per pey pga pgc pge pgg pgo pgp pgr pgy poa poc poe pog poo pop por poy ppa ppc ppe ppg ppo ppp ppr pra prc pre prg pro prp prr pry py- pya pyc pye pyg pyo pyr ra- raa rac rae rag rao rap rar ray rca rcc rce rcg rco rcp rcr re- rea rec ree reg reo rep rer rey rga rgc rge rgg rgo rgp rgr roa roc roe rog roo rop ror roy rpa rpc rpe rpg rpo rpp rpr rra rrc rrg rrp rrr ry- rya ryc rye ryg ryo ryr ryy yaa yac yae yag yao yap yar yay yca ycc yce yco ycp ycy yea yec yee yeg yeo yep yer yey yga ygc ygo yoc yoe yog yoo yop yor yoy ypa ypg ypo yra yrc yre yrg yro yrp yyc yye yyg yyy