fines ifnes fnies nfies infes nifes fiens ifens feins efins iefns eifns fneis nfeis fenis efnis nefis enfis inefs niefs ienfs einfs neifs enifs finse ifnse fnise nfise infse nifse fisne ifsne fsine sfine isfne sifne fnsie nfsie fsnie sfnie nsfie snfie insfe nisfe isnfe sinfe nsife snife fiesn ifesn feisn efisn iefsn eifsn fisen ifsen fsien sfien isfen sifen fesin efsin fsein sfein esfin sefin iesfn eisfn isefn siefn esifn seifn fnesi nfesi fensi efnsi nefsi enfsi fnsei nfsei fsnei sfnei nsfei snfei fesni efsni fseni sfeni esfni sefni nesfi ensfi nsefi snefi esnfi senfi inesf niesf iensf einsf neisf enisf insef nisef isnef sinef nsief snief iesnf eisnf isenf sienf esinf seinf nesif ensif nseif sneif esnif senif
Note: these 'words' (valid or invalid) are all the permutations of the word fines. These words are obtained by scrambling the letters in fines.