-er -ey a-a a-c aaa aac aae aap aar aav aay ac- aca acc ace acp acr acv acy aea aec aee aep aer aev aey ap- apa apc ape app apr apv apy ar- ara arc are arp arr arv ary av- ava avc ave avp avr avy ay- aya ayc aye ayp ayr c-- caa cac cae cap car cav cay cca ccc cce ccp ccr ccv ce- cea cec cee cep cer cev cey cpa cpc cpe cpp cpr cpv cra crc cre crp crr crv cry cva cvc cve cvp cvr cvv cya cyc cye cyp cyr eaa eac eae eap ear eav ec- eca ecc ece ecr ecv eea eec eee eep eer eev eey ep- epa epc epe epp epr era erc ere erp err erv ery eva evc eve evp evr evv evy eya eyc eye eyp eyr p-p paa pac pae pap par pav pay pca pcc pce pcp pcr pcv pea pec pee pep per pev pey ppa ppc ppe ppp ppr ppv pra prc pre prp prr prv pry pva pvc pve pvp pvr pvv py- pya pyc pye pyr ra- raa rac rae rap rar rav ray rca rcc rce rcp rcr rcv re- rea rec ree rep rer rev rey rpa rpc rpe rpp rpr rpv rra rrc rrp rrr rva rvc rve rvp rvr rvv rvy ry- rya ryc rye ryr ryy v-a v-e vaa vac vae vap var vav vay vca vcc vce vcp vcr vcy vea vec vee vep ver vey vpa vpc vpe vpp vpr vra vrc vre vrp vrr vry vva vvc vvr vvv vye vyp yaa yac yae yap yar yav yay yca ycc yce ycp ycv ycy yea yec yee yep yer yev yey ypa yra yrc yre yrp yva yve yvr yvy yyc yye yyy