cafes acfes cfaes fcaes afces faces caefs acefs ceafs ecafs aecfs eacfs cfeas fceas cefas ecfas fecas efcas afecs faecs aefcs eafcs feacs efacs cafse acfse cfase fcase afcse facse casfe acsfe csafe scafe ascfe sacfe cfsae fcsae csfae scfae fscae sfcae afsce fasce asfce safce fsace sface caesf acesf ceasf ecasf aecsf eacsf casef acsef csaef scaef ascef sacef cesaf ecsaf cseaf sceaf escaf secaf aescf eascf asecf saecf esacf seacf cfesa fcesa cefsa ecfsa fecsa efcsa cfsea fcsea csfea scfea fscea sfcea cesfa ecsfa csefa scefa escfa secfa fesca efsca fseca sfeca esfca sefca afesc faesc aefsc eafsc feasc efasc afsec fasec asfec safec fsaec sfaec aesfc easfc asefc saefc esafc seafc fesac efsac fseac sfeac esfac sefac
Note: these 'words' (valid or invalid) are all the permutations of the word cafes. These words are obtained by scrambling the letters in cafes.