a-a a-c aaa aac aae aag aah aak aan ac- aca acc ace acg ach ack acn aea aec aee aeg aeh aek aen ag- aga agc age agg agh agk agn aha ahc ahe ahg ahh ahk ahn aka akc ake akg akh akk akn an- ana anc ane ang anh ank ann c-- caa cac cae cag cah cak can cca ccc cce ccg cch cck ccn ce- cea cec cee ceg ceh cek cen cga cgc cge cgg cgh cgn ch- cha chc che chg chh chk chn cka ckc ckh cn- cna cnc cne cng cnh cnn eaa eac eae eag eah eak ean ec- eca ecc ece ecg ech eck ecn eea eec eee eeg eek een ega egc ege egg egh egn eha ehc ehe ehg ehh ehn eka ekc eke ekg ekh en- ena enc ene eng enh enk enn gaa gac gae gag gah gak gan gca gcc gce gcg gch gck gcn ge- gea gec gee geg geh gek gen gga ggc ggg ggh ggn gha ghc ghe ghg ghh ghn gka gkh gkn gna gnc gne gnn haa hac hae hag hah hak han hca hcc hce hcg hch hck hcn he- hea hec hee heg heh hek hen hga hgc hge hgg hgh hgk hgn hha hhc hhe hhg hhh hhk hhn hka hkg hkh hkk hkn hna hnc hne hng hnh hnk hnn ka- kaa kac kae kag kah kak kan kca kcc kce kcg kch kck kcn ke- kea kec kee keg keh kek ken kga kgc kgh kha khe khh khk khn kkc kke kkh kkk kkn kn- kna knc kne kng knk knn naa nac nae nag nah nak nan nca ncc nce ncg nch nck ncn ne- nea nec nee neg neh nek nen nga ngc nge ngg ngh ngk ngn nha nhc nhe nhg nhh nhk nhn nka nkc nke nkk nkn nna nnc nne nng nnh nnk nnn