phlon hplon plhon lphon hlpon lhpon pholn hpoln pohln ophln hopln ohpln plohn lpohn polhn oplhn lophn olphn hlopn lhopn holpn ohlpn lohpn olhpn phlno hplno plhno lphno hlpno lhpno phnlo hpnlo pnhlo nphlo hnplo nhplo plnho lpnho pnlho nplho lnpho nlpho hlnpo lhnpo hnlpo nhlpo lnhpo nlhpo phonl hponl pohnl ophnl hopnl ohpnl phnol hpnol pnhol nphol hnpol nhpol ponhl opnhl pnohl npohl onphl nophl honpl ohnpl hnopl nhopl onhpl nohpl plonh lponh polnh oplnh lopnh olpnh plnoh lpnoh pnloh nploh lnpoh nlpoh ponlh opnlh pnolh npolh onplh noplh lonph olnph lnoph nloph onlph nolph hlonp lhonp holnp ohlnp lohnp olhnp hlnop lhnop hnlop nhlop lnhop nlhop honlp ohnlp hnolp nholp onhlp nohlp lonhp olnhp lnohp nlohp onlhp nolhp
Note: these 'words' (valid or invalid) are all the permutations of the word phlon. These words are obtained by scrambling the letters in phlon.