cahow achow chaow hcaow ahcow hacow caohw acohw coahw ocahw aochw oachw choaw hcoaw cohaw ochaw hocaw ohcaw ahocw haocw aohcw oahcw hoacw ohacw cahwo achwo chawo hcawo ahcwo hacwo cawho acwho cwaho wcaho awcho wacho chwao hcwao cwhao wchao hwcao whcao ahwco hawco awhco wahco hwaco whaco caowh acowh coawh ocawh aocwh oacwh cawoh acwoh cwaoh wcaoh awcoh wacoh cowah ocwah cwoah wcoah owcah wocah aowch oawch awoch waoch owach woach chowa hcowa cohwa ochwa hocwa ohcwa chwoa hcwoa cwhoa wchoa hwcoa whcoa cowha ocwha cwoha wcoha owcha wocha howca ohwca hwoca whoca owhca wohca ahowc haowc aohwc oahwc hoawc ohawc ahwoc hawoc awhoc wahoc hwaoc whaoc aowhc oawhc awohc waohc owahc woahc howac ohwac hwoac whoac owhac wohac
Note: these 'words' (valid or invalid) are all the permutations of the word cahow. These words are obtained by scrambling the letters in cahow.