a-a a-c aaa aac aaf aah aak aan ac- aca acc acf ach ack acn af- afa afc aff afh afk afn aha ahc ahf ahh ahk ahn aka akc akh akk akn an- ana anc anf anh ank ann c-- caa cac caf cah cak can cca ccc ccf cch cck ccn cfa cfc cff cfh cfk cfn ch- cha chc chf chh chk chn cka ckc ckh cn- cna cnc cnf cnh cnn faa fac faf fah fak fan fca fcc fcf fck fcn ffa ffc fff ffh ffk ffn fha fhc fhf fhh fhn fka fkc fkf fkk fna fnc fnf fnh fnk fnn haa hac haf hah hak han hca hcc hcf hch hck hcn hfa hfc hff hfh hfk hfn hha hhc hhf hhh hhk hhn hka hkf hkh hkk hkn hna hnc hnf hnh hnk hnn ka- kaa kac kaf kah kak kan kca kcc kch kck kcn kfa kfc kff kfh kha khf khh khk khn kkc kkh kkk kkn kn- kna knc knf knk knn naa nac naf nah nak nan nca ncc ncf nch nck ncn nfa nfc nff nfk nfn nha nhc nhf nhh nhk nhn nka nkc nkf nkk nkn nna nnc nnf nnh nnk nnn