tower otwer twoer wtoer owter woter toewr otewr teowr etowr oetwr eotwr tweor wteor tewor etwor wetor ewtor owetr woetr oewtr eowtr weotr ewotr towre otwre twore wtore owtre wotre torwe otrwe trowe rtowe ortwe rotwe twroe wtroe trwoe rtwoe wrtoe rwtoe owrte worte orwte rowte wrote rwote toerw oterw teorw etorw oetrw eotrw torew otrew troew rtoew ortew rotew terow etrow treow rteow ertow retow oertw eortw oretw roetw erotw reotw twero wtero tewro etwro wetro ewtro twreo wtreo trweo rtweo wrteo rwteo terwo etrwo trewo rtewo ertwo retwo werto ewrto wreto rweto erwto rewto owert woert oewrt eowrt weort ewort owret woret orwet rowet wroet rwoet oerwt eorwt orewt roewt erowt reowt werot ewrot wreot rweot erwot rewot
Note: these 'words' (valid or invalid) are all the permutations of the word tower. These words are obtained by scrambling the letters in tower.