-er a-a a-c a-q aaa aac aae aah aaq aar ac- aca acc ace ach acq acr aea aec aee aeh aeq aer aha ahc ahe ahh ahq ahr aqa aqc aqr ar- ara arc are arh arq arr c-- caa cac cae cah caq car cca ccc cce cch ccr ce- cea cec cee ceh ceq cer ch- cha chc che chh chq chr cqa cqc cra crc cre crh crq crr eaa eac eae eah ear ec- eca ecc ece ech ecq ecr eea eec eee eer eha ehc ehe ehh ehr eqa eqe eqq era erc ere erh erq err haa hac hae hah haq har hca hcc hce hch hcr he- hea hec hee heh her hha hhc hhe hhh hhr hr- hra hrc hre hrh hrr qaa qac qah qar qca qcc qec qee qeh qhc qqq qra qrc qre qrh ra- raa rac rae rah raq rar rca rcc rce rch rcr re- rea rec ree reh req rer rh- rha rhc rhe rhh rhr rqc rra rrc rrh rrq rrr