begin ebgin bgein gbein egbin gebin beign ebign biegn ibegn eibgn iebgn bgien gbien bigen ibgen giben igben egibn geibn eigbn iegbn giebn igebn begni ebgni bgeni gbeni egbni gebni bengi ebngi bnegi nbegi enbgi nebgi bgnei gbnei bngei nbgei gnbei ngbei egnbi genbi engbi negbi gnebi ngebi being ebing bieng ibeng eibng iebng benig ebnig bneig nbeig enbig nebig bineg ibneg bnieg nbieg inbeg nibeg einbg ienbg enibg neibg inebg niebg bgine gbine bigne ibgne gibne igbne bgnie gbnie bngie nbgie gnbie ngbie binge ibnge bnige nbige inbge nibge ginbe ignbe gnibe ngibe ingbe nigbe eginb geinb eignb iegnb gienb igenb egnib genib engib negib gneib ngeib eingb iengb enigb neigb inegb niegb gineb igneb gnieb ngieb ingeb nigeb
Note: these 'words' (valid or invalid) are all the permutations of the word begin. These words are obtained by scrambling the letters in begin.