-ic a-a a-c a-i aaa aac aae aag aah aai aan aax ac- aca acc ace acg ach aci acn acx aea aec aee aeg aeh aei aen aex ag- aga agc age agg agh agi agn agx aha ahc ahe ahg ahh ahi ahn ahx ai- aia aic aie aig aih aii ain aix an- ana anc ane ang anh ani ann anx ax- axa axe axh axi axn axx c-- caa cac cae cag cah cai can cax cca ccc cce ccg cch cci ccn ccx ce- cea cec cee ceg ceh cei cen cex cga cgc cge cgg cgh cgi cgn ch- cha chc che chg chh chi chn chx ci- cia cic cie cig cih cii cin cix cn- cna cnc cne cng cnh cni cnn cnx cxc cxh cxi cxx eaa eac eae eag eah eai ean eax ec- eca ecc ece ecg ech eci ecn ecx eea eec eee eeg een eex ega egc ege egg egh egi egn egx eha ehc ehe ehg ehh ehi ehn eia eic eie eig eii ein eix en- ena enc ene eng enh eni enn ex- exa exc exe exh exi exx gaa gac gae gag gah gai gan gca gcc gce gcg gch gci gcn ge- gea gec gee geg geh gei gen gex gga ggc ggg ggh ggi ggn gha ghc ghe ghg ghh ghi ghn gia gic gie gig gih gii gin gna gnc gne gni gnn gxa h-i haa hac hae hag hah hai han hax hca hcc hce hcg hch hci hcn he- hea hec hee heg heh hei hen hex hga hgc hge hgg hgh hgi hgn hha hhc hhe hhg hhh hhi hhn hia hic hie hig hih hii hin hix hna hnc hne hng hnh hnn hxc ia- iaa iac iae iag iah iai ian ica icc ice icg ich ici icn ie- iea iec iee ieg iei ien iex iga igc ige igg igh igi ign iha ihc ihe ihg ihh ihi ihn iia iic iie iih iii iin iix in- ina inc ine ing inh ini inn inx ixc ixe ixi ixn n-i naa nac nae nag nah nai nan nax nca ncc nce ncg nch nci ncn ncx ne- nea nec nee neg neh nei nen nex nga ngc nge ngg ngh ngi ngn nha nhc nhe nhg nhh nhi nhn nia nic nie nig nih nii nin nix nna nnc nne nng nnh nni nnn nxc xaa xac xag xan xch xci xcx xee xeg xen xex xge xgi xia xic xie xii xin xix xna xnc xxi xxx