a-a aaa aaf aag aah aak aan af- afa aff afg afh afk afn ag- aga agf agg agh agk agn aha ahf ahg ahh ahk ahn aka akg akh akk akn an- ana anf ang anh ank ann faa faf fag fah fak fan ffa fff ffg ffh ffk ffn fga fgf fgg fgh fgn fha fhf fhg fhh fhn fka fkf fkg fkk fna fnf fng fnh fnk fnn gaa gaf gag gah gak gan gfa gff gfh gfk gga ggg ggh ggn gha ghg ghh ghn gka gkh gkn gna gnf gnn haa haf hag hah hak han hfa hff hfg hfh hfk hfn hga hgf hgg hgh hgk hgn hha hhf hhg hhh hhk hhn hka hkf hkg hkh hkk hkn hna hnf hng hnh hnk hnn ka- kaa kaf kag kah kak kan kfa kff kfg kfh kga kgf kgh kha khf khh khk khn kkh kkk kkn kn- kna knf kng knk knn naa naf nag nah nak nan nfa nff nfk nfn nga ngf ngg ngh ngk ngn nha nhf nhg nhh nhk nhn nka nkf nkk nkn nna nnf nng nnh nnk nnn