-ic a-a a-c a-i aaa aac aae aah aai aax ac- aca acc ace ach aci acx aea aec aee aeh aei aex aha ahc ahe ahh ahi ahx ai- aia aic aie aih aii aix ax- axa axe axh axi axx c-- caa cac cae cah cai cax cca ccc cce cch cci ccx ce- cea cec cee ceh cei cex ch- cha chc che chh chi chx ci- cia cic cie cih cii cix cxc cxh cxi cxx eaa eac eae eah eai eax ec- eca ecc ece ech eci ecx eea eec eee eex eha ehc ehe ehh ehi eia eic eie eii eix ex- exa exc exe exh exi exx h-i haa hac hae hah hai hax hca hcc hce hch hci he- hea hec hee heh hei hex hha hhc hhe hhh hhi hia hic hie hih hii hix hxc ia- iaa iac iae iah iai ica icc ice ich ici ie- iea iec iee iei iex iha ihc ihe ihh ihi iia iic iie iih iii iix ixc ixe ixi xaa xac xch xci xcx xee xex xia xic xie xii xix xxi xxx