nrdga rndga ndrga dnrga rdnga drnga nrgda rngda ngrda gnrda rgnda grnda ndgra dngra ngdra gndra dgnra gdnra rdgna drgna rgdna grdna dgrna gdrna nrdag rndag ndrag dnrag rdnag drnag nradg rnadg nardg anrdg randg arndg ndarg dnarg nadrg andrg danrg adnrg rdang drang radng ardng darng adrng nrgad rngad ngrad gnrad rgnad grnad nragd rnagd nargd anrgd rangd arngd ngard gnard nagrd angrd ganrd agnrd rgand grand ragnd argnd garnd agrnd ndgar dngar ngdar gndar dgnar gdnar ndagr dnagr nadgr andgr dangr adngr ngadr gnadr nagdr angdr gandr agndr dganr gdanr dagnr adgnr gadnr agdnr rdgan drgan rgdan grdan dgran gdran rdagn dragn radgn ardgn dargn adrgn rgadn gradn ragdn argdn gardn agrdn dgarn gdarn dagrn adgrn gadrn agdrn
Note: these 'words' (valid or invalid) are all the permutations of the word nrdga. These words are obtained by scrambling the letters in nrdga.