-er -ey a-a a-c aaa aac aae aah aao aar aay ac- aca acc ace ach aco acr acy aea aec aee aeh aeo aer aey aha ahc ahe ahh aho ahr ahy aoa aoc aoe aoh aoo aor ar- ara arc are arh aro arr ary ay- aya ayc aye ayh ayo ayr c-- caa cac cae cah cao car cay cca ccc cce cch cco ccr ce- cea cec cee ceh ceo cer cey ch- cha chc che chh cho chr chy co- coa coc coe coh coo cor coy cra crc cre crh cro crr cry cya cyc cye cyo cyr eaa eac eae eah eao ear ec- eca ecc ece ech eco ecr eea eec eee eeo eer eey eha ehc ehe ehh eho ehr eo- eoa eoc eoe eoh eoo eor era erc ere erh ero err ery eya eyc eye eyo eyr haa hac hae hah hao har hay hca hcc hce hch hco hcr hcy he- hea hec hee heh heo her hey hha hhc hhe hhh hho hhr hhy hoa hoc hoe hoh hoo hor hoy hr- hra hrc hre hrh hro hrr hy- hya hyc hye hyh hyo hyr hyy oaa oac oae oah oao oar oc- oca occ och oco ocr oea oec oee oeh oeo oer oey oha ohc ohe ohh oho ohr oo- ooa ooc ooh ooo oor or- ora orc ore orh oro orr ory oya oye oyo ra- raa rac rae rah rao rar ray rca rcc rce rch rco rcr re- rea rec ree reh reo rer rey rh- rha rhc rhe rhh rho rhr roa roc roe roh roo ror roy rra rrc rrh rrr ry- rya ryc rye ryo ryr ryy yaa yac yae yah yao yar yay yca ycc yce ych yco ycy yea yec yee yeh yeo yer yey yha yhc yhe yoc yoe yoo yor yoy yra yrc yre yro yyc yye yyy