nalpn anlpn nlapn lnapn alnpn lanpn napln anpln npaln pnaln apnln panln nlpan lnpan nplan pnlan lpnan plnan alpnn lapnn aplnn palnn lpann plann nalnp anlnp nlanp lnanp alnnp lannp nanlp annlp nnalp nnalp annlp nanlp nlnap lnnap nnlap nnlap lnnap nlnap alnnp lannp anlnp nalnp lnanp nlanp napnl anpnl npanl pnanl apnnl pannl nanpl annpl nnapl nnapl annpl nanpl npnal pnnal nnpal nnpal pnnal npnal apnnl pannl anpnl napnl pnanl npanl nlpna lnpna nplna pnlna lpnna plnna nlnpa lnnpa nnlpa nnlpa lnnpa nlnpa npnla pnnla nnpla nnpla pnnla npnla lpnna plnna lnpna nlpna pnlna nplna alpnn lapnn aplnn palnn lpann plann alnpn lanpn anlpn nalpn lnapn nlapn apnln panln anpln napln pnaln npaln lpnan plnan lnpan nlpan pnlan nplan
Note: these 'words' (valid or invalid) are all the permutations of the word nalpn. These words are obtained by scrambling the letters in nalpn.