pekin epkin pkein kpein ekpin kepin peikn epikn piekn ipekn eipkn iepkn pkien kpien piken ipken kipen ikpen ekipn keipn eikpn iekpn kiepn ikepn pekni epkni pkeni kpeni ekpni kepni penki epnki pneki npeki enpki nepki pknei kpnei pnkei npkei knpei nkpei eknpi kenpi enkpi nekpi knepi nkepi peink epink pienk ipenk eipnk iepnk penik epnik pneik npeik enpik nepik pinek ipnek pniek npiek inpek nipek einpk ienpk enipk neipk inepk niepk pkine kpine pikne ipkne kipne ikpne pknie kpnie pnkie npkie knpie nkpie pinke ipnke pnike npike inpke nipke kinpe iknpe knipe nkipe inkpe nikpe ekinp keinp eiknp ieknp kienp ikenp eknip kenip enkip nekip kneip nkeip einkp ienkp enikp neikp inekp niekp kinep iknep kniep nkiep inkep nikep
Note: these 'words' (valid or invalid) are all the permutations of the word pekin. These words are obtained by scrambling the letters in pekin.