a-a aaa aaf aah aak aan af- afa aff afh afk afn aha ahf ahh ahk ahn aka akh akk akn an- ana anf anh ank ann faa faf fah fak fan ffa fff ffh ffk ffn fha fhf fhh fhn fka fkf fkk fna fnf fnh fnk fnn haa haf hah hak han hfa hff hfh hfk hfn hha hhf hhh hhk hhn hka hkf hkh hkk hkn hna hnf hnh hnk hnn ka- kaa kaf kah kak kan kfa kff kfh kha khf khh khk khn kkh kkk kkn kn- kna knf knk knn naa naf nah nak nan nfa nff nfk nfn nha nhf nhh nhk nhn nka nkf nkk nkn nna nnf nnh nnk nnn