c-- ccc cch cck cco ccr ccw ch- chc chh chk cho chr chw ckc ckh cko ckw co- coc coh cok coo cor cow crc crh crk cro crr crw cw- cwc cwh cwk cwo cwr hcc hch hck hco hcr hcw hhc hhh hhk hho hhr hhw hkh hkk hko hkr hkw hoc hoh hok hoo hor how hr- hrc hrh hrk hro hrr hrw hw- hwk hwo hwr hww kcc kch kck kcr khh khk kho khr kkc kkh kkk kkr koc koh kok koo kor kow krc krk kro krr krw kw- kwc kwh kwk kwo kww oc- occ och ock oco ocr ocw ohc ohh oho ohr okc okk oko okr okw oo- ooc ooh ook ooo oor oow or- orc orh ork oro orr owc owh owk owo oww rcc rch rco rcr rcw rh- rhc rhh rho rhr rkc rkk rko roc roh rok roo ror row rrc rrh rrk rrr rwc rwh rwr wcc wch wck wco wcr wcw wh- whc whh whk who whr whw wkc wko wkr wkw woc woh wok woo wor wow wr- wrc wrh wrk wro wrr wrw wwc wwo www