c-- ccc cce cch cco ccu ce- cec cee ceh ceo ceu ch- chc che chh cho chu co- coc coe coh coo cou cuc cue cuh cuo cuu ec- ecc ece ech eco ecu eec eee eeo ehc ehe ehh eho ehu eo- eoc eoe eoh eoo eou eu- euc eue hcc hce hch hco he- hec hee heh heo heu hhc hhe hhh hho hhu hoc hoe hoh hoo hou huc hue huh huo huu oc- occ och oco ocu oec oee oeh oeo ohc ohe ohh oho ohu oo- ooc ooh ooo ou- ouc oue ouh ouo ucc uce uch uco ucu uec uee ueh uhc uhe uhh uho uhu uoc uoe uoo uuc uue uuu