gauch aguch guach ugach augch uagch gacuh agcuh gcauh cgauh acguh caguh gucah ugcah gcuah cguah ucgah cugah aucgh uacgh acugh caugh ucagh cuagh gauhc aguhc guahc ugahc aughc uaghc gahuc aghuc ghauc hgauc ahguc haguc guhac ughac ghuac hguac uhgac hugac auhgc uahgc ahugc haugc uhagc huagc gachu agchu gcahu cgahu acghu caghu gahcu aghcu ghacu hgacu ahgcu hagcu gchau cghau ghcau hgcau chgau hcgau achgu cahgu ahcgu hacgu chagu hcagu gucha ugcha gcuha cguha ucgha cugha guhca ughca ghuca hguca uhgca hugca gchua cghua ghcua hgcua chgua hcgua uchga cuhga uhcga hucga chuga hcuga auchg uachg acuhg cauhg ucahg cuahg auhcg uahcg ahucg haucg uhacg huacg achug cahug ahcug hacug chaug hcaug uchag cuhag uhcag hucag chuag hcuag
Note: these 'words' (valid or invalid) are all the permutations of the word gauch. These words are obtained by scrambling the letters in gauch.