rache arche rcahe crahe acrhe carhe rahce arhce rhace hrace ahrce harce rchae crhae rhcae hrcae chrae hcrae achre cahre ahcre hacre chare hcare raceh arceh rcaeh craeh acreh careh raech arech reach erach aerch earch rceah creah recah ercah cerah ecrah acerh caerh aecrh eacrh cearh ecarh rahec arhec rhaec hraec ahrec harec raehc arehc reahc erahc aerhc earhc rheac hreac rehac erhac herac ehrac aherc haerc aehrc eahrc hearc eharc rchea crhea rhcea hrcea chrea hcrea rceha creha recha ercha cerha ecrha rheca hreca rehca erhca herca ehrca chera hcera cehra echra hecra ehcra acher caher ahcer hacer chaer hcaer acehr caehr aechr eachr ceahr ecahr ahecr haecr aehcr eahcr heacr ehacr chear hcear cehar echar hecar ehcar
Note: these 'words' (valid or invalid) are all the permutations of the word rache. These words are obtained by scrambling the letters in rache.