focal ofcal fcoal cfoal ocfal cofal foacl ofacl faocl afocl oafcl aofcl fcaol cfaol facol afcol cafol acfol ocafl coafl oacfl aocfl caofl acofl focla ofcla fcola cfola ocfla cofla folca oflca floca lfoca olfca lofca fcloa cfloa flcoa lfcoa clfoa lcfoa oclfa colfa olcfa locfa clofa lcofa foalc ofalc faolc afolc oaflc aoflc folac oflac floac lfoac olfac lofac faloc afloc flaoc lfaoc alfoc lafoc oalfc aolfc olafc loafc alofc laofc fcalo cfalo faclo afclo caflo acflo fclao cflao flcao lfcao clfao lcfao falco aflco flaco lfaco alfco lafco calfo aclfo clafo lcafo alcfo lacfo ocalf coalf oaclf aoclf caolf acolf oclaf colaf olcaf locaf cloaf lcoaf oalcf aolcf olacf loacf alocf laocf calof aclof claof lcaof alcof lacof
Note: these 'words' (valid or invalid) are all the permutations of the word focal. These words are obtained by scrambling the letters in focal.