-er a-a a-c a-z aaa aac aae aah aar aaz ac- aca acc ace ach acr acz aea aec aee aeh aer aez aha ahc ahe ahh ahr ahz ar- ara arc are arh arr arz az- aza aze azz c-- caa cac cae cah car caz cca ccc cce cch ccr ccz ce- cea cec cee ceh cer cez ch- cha chc che chh chr chz cra crc cre crh crr crz cz- czc cze eaa eac eae eah ear eaz ec- eca ecc ece ech ecr eea eec eee eer eha ehc ehe ehh ehr era erc ere erh err erz eze ezh ezr ezz haa hac hae hah har haz hca hcc hce hch hcr he- hea hec hee heh her hez hha hhc hhe hhh hhr hhz hr- hra hrc hre hrh hrr hrz hze ra- raa rac rae rah rar raz rca rcc rce rch rcr re- rea rec ree reh rer rez rh- rha rhc rhe rhh rhr rra rrc rrh rrr rza rze zaa zac zah zar zaz zce zea zec zee zeh zer zez zha zhc zhe zhr zrh zzr zzz