chaco hcaco cahco achco hacco ahcco chcao hccao cchao cchao hccao chcao cacho accho ccaho ccaho accho cacho hacco ahcco hcaco chaco achco cahco chaoc hcaoc cahoc achoc hacoc ahcoc choac hcoac cohac ochac hocac ohcac caohc acohc coahc ocahc aochc oachc haocc ahocc hoacc ohacc aohcc oahcc chcoa hccoa cchoa cchoa hccoa chcoa choca hcoca cohca ochca hocca ohcca ccoha ccoha cocha occha cocha occha hcoca choca hocca ohcca cohca ochca cacoh accoh ccaoh ccaoh accoh cacoh caoch acoch coach ocach aocch oacch ccoah ccoah cocah occah cocah occah acoch caoch aocch oacch coach ocach hacoc ahcoc hcaoc chaoc achoc cahoc haocc ahocc hoacc ohacc aohcc oahcc hcoac choac hocac ohcac cohac ochac acohc caohc aochc oachc coahc ocahc
Note: these 'words' (valid or invalid) are all the permutations of the word chaco. These words are obtained by scrambling the letters in chaco.