-ic a-a a-c a-i aaa aac aae aah aai aao aax ac- aca acc ace ach aci aco acx aea aec aee aeh aei aeo aex aha ahc ahe ahh ahi aho ahx ai- aia aic aie aih aii aio aix aoa aoc aoe aoh aoi aoo aox ax- axa axe axh axi axo axx c-- caa cac cae cah cai cao cax cca ccc cce cch cci cco ccx ce- cea cec cee ceh cei ceo cex ch- cha chc che chh chi cho chx ci- cia cic cie cih cii cio cix co- coa coc coe coh coi coo cox cxc cxh cxi cxo cxx eaa eac eae eah eai eao eax ec- eca ecc ece ech eci eco ecx eea eec eee eeo eex eha ehc ehe ehh ehi eho eia eic eie eii eio eix eo- eoa eoc eoe eoh eoi eoo ex- exa exc exe exh exi exo exx h-i haa hac hae hah hai hao hax hca hcc hce hch hci hco he- hea hec hee heh hei heo hex hha hhc hhe hhh hhi hho hia hic hie hih hii hio hix hoa hoc hoe hoh hoi hoo hox hxc ia- iaa iac iae iah iai iao ica icc ice ich ici ico ie- iea iec iee iei iex iha ihc ihe ihh ihi iho iia iic iie iih iii iio iix io- ioa ioc ioe ioh ioi ioo ixc ixe ixi o-i oaa oac oae oah oai oao oax oc- oca occ och oci oco ocx oea oec oee oeh oei oeo oex oha ohc ohe ohh ohi oho oia oic oie oii oio oo- ooa ooc ooh ooi ooo oox ox- oxa oxc oxi oxo oxx xaa xac xch xci xcx xee xex xia xic xie xii xio xix xoa xoc xoi xoo xox xxi xxo xxx