a-a a-c aaa aac aaf aah aar ac- aca acc acf ach acr af- afa afc aff afh afr aha ahc ahf ahh ahr ar- ara arc arf arh arr c-- caa cac caf cah car cca ccc ccf cch ccr cfa cfc cff cfh cfr ch- cha chc chf chh chr cra crc crf crh crr faa fac faf fah far fca fcc fcf fcr ffa ffc fff ffh ffr fha fhc fhf fhh fhr fra frc frf frh frr haa hac haf hah har hca hcc hcf hch hcr hfa hfc hff hfh hfr hha hhc hhf hhh hhr hr- hra hrc hrf hrh hrr ra- raa rac raf rah rar rca rcc rcf rch rcr rfa rfc rff rfh rfr rh- rha rhc rhf rhh rhr rra rrc rrf rrh rrr