c-- ccc ccd cce cco ccu ccv ccx cdc cdd cde cdo cdu cdv cdx ce- cec ced cee ceo ceu cev cex co- coc cod coe coo cou cov cox cuc cud cue cuo cuu cuv cvc cvd cve cvo cvu cvv cvx cxc cxo cxv cxx dcc dcd dce dco dcu dcv dcx ddc ddd dde ddo ddu ddx de- dec ded dee deo deu dev dex doc dod doe doo dou dov dox duc dud due duo duv dux dvc dvd dve dvu dvx dxc dxd dxo dxx ec- ecc ecd ece eco ecu ecv ecx ed- edc edd ede edo edu edx eec eed eee eeo eev eex eo- eoc eod eoe eoo eou eu- euc eud eue euv eux evc evd eve evo evv ex- exc exd exe exo exu exx oc- occ ocd oco ocu ocv ocx odc odd ode odo odu odv oec oed oee oeo oex oo- ooc ood ooo oov oox ou- ouc oud oue ouo ov- ovc ovd ove ovo ovv ox- oxc oxo oxx ucc ucd uce uco ucu ucv udc udd ude udo udu udv udx uec ued uee uoc uod uoe uoo uox uuc uue uuu uvc uve uvo uvu uvv uxc uxo uxu v-e vcc vcd vce vco vcu vcx vdc vdd vde vdo vdu vdv vdx vec ved vee veo veu vex voc vod voe voo vou vov vox vue vuv vvc vvo vvv vxd vxv xcd xcv xcx xdc xde xdv xed xee xeu xev xex xoc xod xoo xov xox xue xuv xxo xxv xxx