float lfoat folat oflat lofat olfat flaot lfaot falot aflot lafot alfot foalt ofalt faolt afolt oaflt aoflt loaft olaft laoft aloft oalft aolft flota lfota folta oflta lofta olfta fltoa lftoa ftloa tfloa ltfoa tlfoa fotla oftla ftola tfola otfla tofla lotfa oltfa ltofa tlofa otlfa tolfa flato lfato falto aflto lafto alfto fltao lftao ftlao tflao ltfao tlfao fatlo aftlo ftalo tfalo atflo taflo latfo altfo ltafo tlafo atlfo talfo foatl ofatl faotl afotl oaftl aoftl fotal oftal ftoal tfoal otfal tofal fatol aftol ftaol tfaol atfol tafol oatfl aotfl otafl toafl atofl taofl loatf olatf laotf alotf oaltf aoltf lotaf oltaf ltoaf tloaf otlaf tolaf latof altof ltaof tlaof atlof talof oatlf aotlf otalf toalf atolf taolf
Note: these 'words' (valid or invalid) are all the permutations of the word float. These words are obtained by scrambling the letters in float.