front rfont fornt ofrnt rofnt orfnt frnot rfnot fnrot nfrot rnfot nrfot fonrt ofnrt fnort nfort onfrt nofrt ronft ornft rnoft nroft onrft norft frotn rfotn fortn ofrtn roftn orftn frton rfton ftron tfron rtfon trfon fotrn oftrn ftorn tforn otfrn tofrn rotfn ortfn rtofn trofn otrfn torfn frnto rfnto fnrto nfrto rnfto nrfto frtno rftno ftrno tfrno rtfno trfno fntro nftro ftnro tfnro ntfro tnfro rntfo nrtfo rtnfo trnfo ntrfo tnrfo fontr ofntr fnotr nfotr onftr noftr fotnr oftnr ftonr tfonr otfnr tofnr fntor nftor ftnor tfnor ntfor tnfor ontfr notfr otnfr tonfr ntofr tnofr rontf orntf rnotf nrotf onrtf nortf rotnf ortnf rtonf tronf otrnf tornf rntof nrtof rtnof trnof ntrof tnrof ontrf notrf otnrf tonrf ntorf tnorf
Note: these 'words' (valid or invalid) are all the permutations of the word front. These words are obtained by scrambling the letters in front.