a-a a-c aaa aac aad aae aah aao aax ac- aca acc acd ace ach aco acx ad- ada adc add ade adh ado adx aea aec aed aee aeh aeo aex aha ahc ahd ahe ahh aho ahx aoa aoc aod aoe aoh aoo aox ax- axa axe axh axo axx c-- caa cac cad cae cah cao cax cca ccc ccd cce cch cco ccx cda cdc cdd cde cdh cdo cdx ce- cea cec ced cee ceh ceo cex ch- cha chc chd che chh cho chx co- coa coc cod coe coh coo cox cxc cxh cxo cxx daa dac dad dae dah dao dax dca dcc dcd dce dco dcx dda ddc ddd dde ddh ddo ddx de- dea dec ded dee deh deo dex dh- dha dhc dhd dhe dhh dho doa doc dod doe doh doo dox dxc dxd dxo dxx eaa eac ead eae eah eao eax ec- eca ecc ecd ece ech eco ecx ed- eda edc edd ede edh edo edx eea eec eed eee eeo eex eha ehc ehd ehe ehh eho eo- eoa eoc eod eoe eoh eoo ex- exa exc exd exe exh exo exx haa hac had hae hah hao hax hca hcc hcd hce hch hco hda hdc hdd hde hdh hdo hdx he- hea hec hed hee heh heo hex hha hhc hhd hhe hhh hho hoa hoc hod hoe hoh hoo hox hxc hxd oaa oac oad oae oah oao oax oc- oca occ ocd och oco ocx oda odc odd ode odh odo oea oec oed oee oeh oeo oex oha ohc ohd ohe ohh oho oo- ooa ooc ood ooh ooo oox ox- oxa oxc oxo oxx xaa xac xad xcd xch xcx xda xdc xde xdh xed xee xex xhd xoa xoc xod xoo xox xxo xxx