a-a a-b a-c a-q aaa aab aac aae aah aaq ab- aba abb abc abe abh abq ac- aca acb acc ace ach acq aea aeb aec aee aeh aeq aha ahb ahc ahe ahh ahq aqa aqc baa bab bac bae bah baq bba bbb bbc bbe bbh bbq bca bcb bcc bce bch bcq be- bea beb bec bee beh beq bha bhb bhc bhe bhh bhq bqc bqe c-- caa cab cac cae cah caq cba cbb cbc cbe cbh cbq cca ccb ccc cce cch ce- cea ceb cec cee ceh ceq ch- cha chb chc che chh chq cqa cqb cqc eaa eab eac eae eah eba ebb ebc ebe ebh ebq ec- eca ecb ecc ece ech ecq eea eeb eec eee eha ehb ehc ehe ehh eqa eqe eqq haa hab hac hae hah haq hba hbb hbc hbe hbh hca hcb hcc hce hch he- hea heb hec hee heh hha hhb hhc hhe hhh qaa qac qah qba qbc qbe qbq qca qcc qec qee qeh qhc qqq