c-- ccc cce cch ccn ccv ccx ce- cec cee ceh cen cev cex ch- chc che chh chn chv chx cn- cnc cne cnh cnn cnv cnx cvc cve cvh cvn cvv cvx cxc cxh cxv cxx ec- ecc ece ech ecn ecv ecx eec eee een eev eex ehc ehe ehh ehn ehv en- enc ene enh enn env evc eve evh evn evv ex- exc exe exh exx hcc hce hch hcn hcv he- hec hee heh hen hev hex hhc hhe hhh hhn hhv hnc hne hnh hnn hnv hv- hvc hvn hvv hvx hxc ncc nce nch ncn ncv ncx ne- nec nee neh nen nev nex nhc nhe nhh nhn nhv nnc nne nnh nnn nnv nvc nve nvh nvn nvv nxc nxv v-e vcc vce vch vcn vcx vec vee veh ven vex vh- vhc vhe vhx vn- vnv vvc vvv vxv xch xcv xcx xee xen xev xex xnc xvh xxv xxx