dumka udmka dmuka mduka umdka mudka dukma udkma dkuma kduma ukdma kudma dmkua mdkua dkmua kdmua mkdua kmdua umkda mukda ukmda kumda mkuda kmuda dumak udmak dmuak mduak umdak mudak duamk udamk daumk adumk uadmk audmk dmauk mdauk damuk admuk maduk amduk umadk muadk uamdk aumdk maudk amudk dukam udkam dkuam kduam ukdam kudam duakm udakm daukm adukm uadkm audkm dkaum kdaum dakum adkum kadum akdum ukadm kuadm uakdm aukdm kaudm akudm dmkau mdkau dkmau kdmau mkdau kmdau dmaku mdaku damku admku madku amdku dkamu kdamu dakmu adkmu kadmu akdmu mkadu kmadu makdu amkdu kamdu akmdu umkad mukad ukmad kumad mkuad kmuad umakd muakd uamkd aumkd maukd amukd ukamd kuamd uakmd aukmd kaumd akumd mkaud kmaud makud amkud kamud akmud
Note: these 'words' (valid or invalid) are all the permutations of the word dumka. These words are obtained by scrambling the letters in dumka.