speil pseil sepil espil pesil epsil spiel psiel sipel ispel pisel ipsel seipl esipl siepl isepl eispl iespl peisl episl piesl ipesl eipsl iepsl speli pseli sepli espli pesli epsli splei pslei slpei lspei plsei lpsei selpi eslpi slepi lsepi elspi lespi pelsi eplsi plesi lpesi elpsi lepsi spile psile siple isple pisle ipsle splie pslie slpie lspie plsie lpsie silpe islpe slipe lsipe ilspe lispe pilse iplse plise lpise ilpse lipse seilp esilp sielp iselp eislp ieslp selip eslip sleip lseip elsip lesip silep islep sliep lsiep ilsep lisep eilsp ielsp elisp leisp ilesp liesp peils epils piels ipels eipls iepls pelis eplis pleis lpeis elpis lepis piles iples plies lpies ilpes lipes eilps ielps elips leips ileps lieps
Note: these 'words' (valid or invalid) are all the permutations of the word speil. These words are obtained by scrambling the letters in speil.