a-a a-b a-c a-q aaa aab aac aah aaq aar ab- aba abb abc abh abq abr ac- aca acb acc ach acq acr aha ahb ahc ahh ahq ahr aqa aqc aqr ar- ara arb arc arh arq arr baa bab bac bah baq bar bba bbb bbc bbh bbq bbr bca bcb bcc bch bcq bcr bha bhb bhc bhh bhq bhr bqc bra brb brh brq brr c-- caa cab cac cah caq car cba cbb cbc cbh cbq cbr cca ccb ccc cch ccr ch- cha chb chc chh chq chr cqa cqb cqc cra crb crc crh crq crr haa hab hac hah haq har hba hbb hbc hbh hbr hca hcb hcc hch hcr hha hhb hhc hhh hhr hr- hra hrb hrc hrh hrr qaa qac qah qar qba qbc qbq qca qcc qhc qqq qra qrb qrc qrh ra- raa rab rac rah raq rar rba rbb rbc rbh rbr rca rcb rcc rch rcr rh- rha rhb rhc rhh rhr rqc rra rrb rrc rrh rrq rrr