ocatv coatv oactv aoctv caotv acotv octav cotav otcav tocav ctoav tcoav oatcv aotcv otacv toacv atocv taocv catov actov ctaov tcaov atcov tacov ocavt coavt oacvt aocvt caovt acovt ocvat covat ovcat vocat cvoat vcoat oavct aovct ovact voact avoct vaoct cavot acvot cvaot vcaot avcot vacot octva cotva otcva tocva ctova tcova ocvta covta ovcta vocta cvota vcota otvca tovca ovtca votca tvoca vtoca ctvoa tcvoa cvtoa vctoa tvcoa vtcoa oatvc aotvc otavc toavc atovc taovc oavtc aovtc ovatc voatc avotc vaotc otvac tovac ovtac votac tvoac vtoac atvoc tavoc avtoc vatoc tvaoc vtaoc catvo actvo ctavo tcavo atcvo tacvo cavto acvto cvato vcato avcto vacto ctvao tcvao cvtao vctao tvcao vtcao atvco tavco avtco vatco tvaco vtaco
Note: these 'words' (valid or invalid) are all the permutations of the word ocatv. These words are obtained by scrambling the letters in ocatv.