mourn omurn muorn umorn oumrn uomrn morun omrun mroun rmoun ormun romun muron umron mruon rmuon urmon rumon ourmn uormn orumn roumn uromn ruomn mounr omunr muonr umonr oumnr uomnr monur omnur mnour nmour onmur nomur munor umnor mnuor nmuor unmor numor ounmr uonmr onumr noumr unomr nuomr mornu omrnu mronu rmonu ormnu romnu monru omnru mnoru nmoru onmru nomru mrnou rmnou mnrou nmrou rnmou nrmou ornmu ronmu onrmu normu rnomu nromu murno umrno mruno rmuno urmno rumno munro umnro mnuro nmuro unmro numro mrnuo rmnuo mnruo nmruo rnmuo nrmuo urnmo runmo unrmo nurmo rnumo nrumo ournm uornm orunm rounm uronm ruonm ounrm uonrm onurm nourm unorm nuorm ornum ronum onrum norum rnoum nroum urnom runom unrom nurom rnuom nruom
Note: these 'words' (valid or invalid) are all the permutations of the word mourn. These words are obtained by scrambling the letters in mourn.