mould omuld muold umold oumld uomld molud omlud mloud lmoud olmud lomud mulod umlod mluod lmuod ulmod lumod oulmd uolmd olumd loumd ulomd luomd moudl omudl muodl umodl oumdl uomdl modul omdul mdoul dmoul odmul domul mudol umdol mduol dmuol udmol dumol oudml uodml oduml douml udoml duoml moldu omldu mlodu lmodu olmdu lomdu modlu omdlu mdolu dmolu odmlu domlu mldou lmdou mdlou dmlou ldmou dlmou oldmu lodmu odlmu dolmu ldomu dlomu muldo umldo mludo lmudo ulmdo lumdo mudlo umdlo mdulo dmulo udmlo dumlo mlduo lmduo mdluo dmluo ldmuo dlmuo uldmo ludmo udlmo dulmo ldumo dlumo ouldm uoldm oludm loudm ulodm luodm oudlm uodlm odulm doulm udolm duolm oldum lodum odlum dolum ldoum dloum uldom ludom udlom dulom lduom dluom
Note: these 'words' (valid or invalid) are all the permutations of the word mould. These words are obtained by scrambling the letters in mould.