caffs acffs cfafs fcafs afcfs facfs caffs acffs cfafs fcafs afcfs facfs cffas fcfas cffas fcfas ffcas ffcas affcs fafcs affcs fafcs ffacs ffacs cafsf acfsf cfasf fcasf afcsf facsf casff acsff csaff scaff ascff sacff cfsaf fcsaf csfaf scfaf fscaf sfcaf afscf fascf asfcf safcf fsacf sfacf cafsf acfsf cfasf fcasf afcsf facsf casff acsff csaff scaff ascff sacff cfsaf fcsaf csfaf scfaf fscaf sfcaf afscf fascf asfcf safcf fsacf sfacf cffsa fcfsa cffsa fcfsa ffcsa ffcsa cfsfa fcsfa csffa scffa fscfa sfcfa cfsfa fcsfa csffa scffa fscfa sfcfa ffsca ffsca fsfca sffca fsfca sffca affsc fafsc affsc fafsc ffasc ffasc afsfc fasfc asffc saffc fsafc sfafc afsfc fasfc asffc saffc fsafc sfafc ffsac ffsac fsfac sffac fsfac sffac
Note: these 'words' (valid or invalid) are all the permutations of the word caffs. These words are obtained by scrambling the letters in caffs.