a-a a-c aaa aac aaf aah aam ac- aca acc acf ach acm af- afa afc aff afh afm aha ahc ahf ahh ahm ama amc amf amh amm c-- caa cac caf cah cam cca ccc ccf cch ccm cfa cfc cff cfh cfm ch- cha chc chf chh chm cma cmc cmf cmh cmm faa fac faf fah fam fca fcc fcf fcm ffa ffc fff ffh ffm fha fhc fhf fhh fhm fma fmc fmf fmh fmm haa hac haf hah ham hca hcc hcf hch hcm hfa hfc hff hfh hfm hha hhc hhf hhh hhm hma hmc hmf hmh hmm m-f maa mac maf mah mam mc- mca mcc mcf mch mcm mfa mfc mff mfh mfm mha mhc mhf mhh mhm mma mmc mmf mmh mmm