penna epnna pnena npena enpna nepna penna epnna pnena npena enpna nepna pnnea npnea pnnea npnea nnpea nnpea ennpa nenpa ennpa nenpa nnepa nnepa penan epnan pnean npean enpan nepan peann epann paenn apenn eapnn aepnn pnaen npaen panen apnen napen anpen enapn neapn eanpn aenpn naepn anepn penan epnan pnean npean enpan nepan peann epann paenn apenn eapnn aepnn pnaen npaen panen apnen napen anpen enapn neapn eanpn aenpn naepn anepn pnnae npnae pnnae npnae nnpae nnpae pnane npane panne apnne napne anpne pnane npane panne apnne napne anpne nnape nnape nanpe annpe nanpe annpe ennap nenap ennap nenap nneap nneap enanp neanp eannp aennp naenp anenp enanp neanp eannp aennp naenp anenp nnaep nnaep nanep annep nanep annep
Note: these 'words' (valid or invalid) are all the permutations of the word penna. These words are obtained by scrambling the letters in penna.