-er -ey a-a a-c aaa aac aae aap aar aas aay ac- aca acc ace acp acr acs acy aea aec aee aep aer aes aey ap- apa apc ape app apr aps apy ar- ara arc are arp arr ars ary as- asa asc ase asp asr ass asy ay- aya ayc aye ayp ayr ays c-- caa cac cae cap car cas cay cca ccc cce ccp ccr ccs ce- cea cec cee cep cer ces cey cpa cpc cpe cpp cpr cps cra crc cre crp crr crs cry csa csc cse csp csr css csy cya cyc cye cyp cyr cys eaa eac eae eap ear eas ec- eca ecc ece ecr ecs eea eec eee eep eer ees eey ep- epa epc epe epp epr eps era erc ere erp err ers ery es- esa esc ese esp esr ess esy eya eyc eye eyp eyr eys p-p paa pac pae pap par pas pay pca pcc pce pcp pcr pcs pea pec pee pep per pes pey ppa ppc ppe ppp ppr pps pra prc pre prp prr prs pry ps- psa psc pse psp psr pss psy py- pya pyc pye pyr pys ra- raa rac rae rap rar ras ray rca rcc rce rcp rcr rcs re- rea rec ree rep rer res rey rpa rpc rpe rpp rpr rps rra rrc rrp rrr rrs rsa rsc rse rsp rsr rss ry- rya ryc rye ryr rys ryy saa sac sae sap sar sas say sca scc sce scp scr scs se- sea sec see sep ser ses sey spa spc spe spp spr sps spy sr- sra src sre srp srr srs sry ss- ssa ssc sse ssp ssr sss sy- sya syc sye syp syr sys yaa yac yae yap yar yas yay yca ycc yce ycp ycs ycy yea yec yee yep yer yes yey ypa yps yra yrc yre yrp yrs ysa ysc yse ysp ysr yss ysy yyc yye yys yyy