cuppy ucppy cpupy pcupy upcpy pucpy cuppy ucppy cpupy pcupy upcpy pucpy cppuy pcpuy cppuy pcpuy ppcuy ppcuy uppcy pupcy uppcy pupcy ppucy ppucy cupyp ucpyp cpuyp pcuyp upcyp pucyp cuypp ucypp cyupp ycupp uycpp yucpp cpyup pcyup cypup ycpup pycup ypcup upycp puycp uypcp yupcp pyucp ypucp cupyp ucpyp cpuyp pcuyp upcyp pucyp cuypp ucypp cyupp ycupp uycpp yucpp cpyup pcyup cypup ycpup pycup ypcup upycp puycp uypcp yupcp pyucp ypucp cppyu pcpyu cppyu pcpyu ppcyu ppcyu cpypu pcypu cyppu ycppu pycpu ypcpu cpypu pcypu cyppu ycppu pycpu ypcpu ppycu ppycu pypcu yppcu pypcu yppcu uppyc pupyc uppyc pupyc ppuyc ppuyc upypc puypc uyppc yuppc pyupc ypupc upypc puypc uyppc yuppc pyupc ypupc ppyuc ppyuc pypuc yppuc pypuc yppuc
Note: these 'words' (valid or invalid) are all the permutations of the word cuppy. These words are obtained by scrambling the letters in cuppy.