a-a a-c aaa aac aag aan aau aax ac- aca acc acg acn acu acx ag- aga agc agg agn agu agx an- ana anc ang ann anu anx au- aua auc aug aun aux ax- axa axn axx c-- caa cac cag can cau cax cca ccc ccg ccn ccu ccx cga cgc cgg cgn cgu cn- cna cnc cng cnn cnu cnx cua cuc cug cun cuu cxc cxx gaa gac gag gan gau gca gcc gcg gcn gcu gga ggc ggg ggn ggu gna gnc gnn gnu gu- gua guc gug gun guu gxa naa nac nag nan nau nax nca ncc ncg ncn ncu ncx nga ngc ngg ngn ngu nna nnc nng nnn nnu nua nuc nug nun nuu nux nxc ua- uaa uac uag uan uau uca ucc ucg ucn ucu uga ugc ugg ugn ugu ugx un- una unc ung unn unu unx uua uuc uug uun uuu uxc uxu xaa xac xag xan xau xcx xna xnc xnu xun xxx