-ey c-- ccc cce cch cck cco ce- cec cee ceh cek ceo cey ch- chc che chh chk cho chy ckc ckh cko cky co- coc coe coh cok coo coy cyc cye cyk cyo ec- ecc ece ech eck eco eec eee eek eeo eey ehc ehe ehh eho ekc eke ekh eko eky eo- eoc eoe eoh eok eoo eyc eye eyo hcc hce hch hck hco hcy he- hec hee heh hek heo hey hhc hhe hhh hhk hho hhy hkh hkk hko hoc hoe hoh hok hoo hoy hy- hyc hye hyh hyo hyy kcc kce kch kck ke- kec kee keh kek keo key khe khh khk kho kkc kke kkh kkk kky koc koe koh kok koo koy kyc kye kyo oc- occ och ock oco oec oee oeh oeo oey ohc ohe ohh oho okc oke okk oko oo- ooc ooh ook ooo oye oyo ycc yce ych yco ycy yec yee yeh yek yeo yey yhc yhe ykk yoc yoe yok yoo yoy yyc yye yyy