c-- ccc cce cch cck cco ccu ce- cec cee ceh cek ceo ceu ch- chc che chh chk cho chu ckc ckh cko co- coc coe coh cok coo cou cuc cue cuh cuk cuo cuu ec- ecc ece ech eck eco ecu eec eee eek eeo ehc ehe ehh eho ehu ekc eke ekh eko eku eo- eoc eoe eoh eok eoo eou eu- euc eue hcc hce hch hck hco he- hec hee heh hek heo heu hhc hhe hhh hhk hho hhu hkh hkk hko hku hoc hoe hoh hok hoo hou huc hue huh huk huo huu kcc kce kch kck kcu ke- kec kee keh kek keo khe khh khk kho khu kkc kke kkh kkk kku koc koe koh kok koo kou kuc kue kuh kuk kuu oc- occ och ock oco ocu oec oee oeh oeo ohc ohe ohh oho ohu okc oke okk oko oku oo- ooc ooh ook ooo ou- ouc oue ouh ouk ouo ucc uce uch uck uco ucu uec uee ueh uhc uhe uhh uho uhu ukc uke ukk uku uoc uoe uok uoo uuc uue uuu