caulc aculc cualc ucalc auclc uaclc caluc acluc clauc lcauc alcuc lacuc culac uclac cluac lcuac ulcac lucac aulcc ualcc alucc laucc ulacc luacc caucl acucl cuacl ucacl auccl uaccl cacul accul ccaul ccaul accul cacul cucal uccal ccual ccual uccal cucal auccl uaccl acucl caucl ucacl cuacl calcu aclcu clacu lcacu alccu laccu caclu acclu ccalu ccalu acclu caclu clcau lccau cclau cclau lccau clcau alccu laccu aclcu calcu lcacu clacu culca uclca cluca lcuca ulcca lucca cucla uccla ccula ccula uccla cucla clcua lccua cclua cclua lccua clcua ulcca lucca uclca culca lcuca cluca aulcc ualcc alucc laucc ulacc luacc auclc uaclc aculc caulc ucalc cualc alcuc lacuc acluc caluc lcauc clauc ulcac lucac uclac culac lcuac cluac
Note: these 'words' (valid or invalid) are all the permutations of the word caulc. These words are obtained by scrambling the letters in caulc.