caves acves cvaes vcaes avces vaces caevs acevs ceavs ecavs aecvs eacvs cveas vceas cevas ecvas vecas evcas avecs vaecs aevcs eavcs veacs evacs cavse acvse cvase vcase avcse vacse casve acsve csave scave ascve sacve cvsae vcsae csvae scvae vscae svcae avsce vasce asvce savce vsace svace caesv acesv ceasv ecasv aecsv eacsv casev acsev csaev scaev ascev sacev cesav ecsav cseav sceav escav secav aescv eascv asecv saecv esacv seacv cvesa vcesa cevsa ecvsa vecsa evcsa cvsea vcsea csvea scvea vscea svcea cesva ecsva cseva sceva escva secva vesca evsca vseca sveca esvca sevca avesc vaesc aevsc eavsc veasc evasc avsec vasec asvec savec vsaec svaec aesvc easvc asevc saevc esavc seavc vesac evsac vseac sveac esvac sevac
Note: these 'words' (valid or invalid) are all the permutations of the word caves. These words are obtained by scrambling the letters in caves.