grnow rgnow gnrow ngrow rngow nrgow gronw rgonw gornw ogrnw rognw orgnw gnorw ngorw gonrw ognrw nogrw ongrw rnogw nrogw rongw orngw norgw onrgw grnwo rgnwo gnrwo ngrwo rngwo nrgwo grwno rgwno gwrno wgrno rwgno wrgno gnwro ngwro gwnro wgnro nwgro wngro rnwgo nrwgo rwngo wrngo nwrgo wnrgo grown rgown gorwn ogrwn rogwn orgwn grwon rgwon gwron wgron rwgon wrgon gowrn ogwrn gworn wgorn owgrn wogrn rowgn orwgn rwogn wrogn owrgn worgn gnowr ngowr gonwr ognwr nogwr ongwr gnwor ngwor gwnor wgnor nwgor wngor gownr ogwnr gwonr wgonr owgnr wognr nowgr onwgr nwogr wnogr owngr wongr rnowg nrowg ronwg ornwg norwg onrwg rnwog nrwog rwnog wrnog nwrog wnrog rowng orwng rwong wrong owrng worng nowrg onwrg nworg wnorg ownrg wonrg
Note: these 'words' (valid or invalid) are all the permutations of the word grnow. These words are obtained by scrambling the letters in grnow.