nipac inpac npiac pniac ipnac pinac niapc inapc naipc anipc ianpc ainpc npaic pnaic napic anpic panic apnic ipanc pianc iapnc aipnc painc apinc nipca inpca npica pnica ipnca pinca nicpa incpa ncipa cnipa icnpa cinpa npcia pncia ncpia cnpia pcnia cpnia ipcna picna icpna cipna pcina cpina niacp inacp naicp anicp iancp aincp nicap incap nciap cniap icnap cinap nacip ancip ncaip cnaip acnip canip iacnp aicnp icanp cianp acinp cainp npaci pnaci napci anpci panci apnci npcai pncai ncpai cnpai pcnai cpnai nacpi ancpi ncapi cnapi acnpi canpi pacni apcni pcani cpani acpni capni ipacn piacn iapcn aipcn paicn apicn ipcan pican icpan cipan pcian cpian iacpn aicpn icapn ciapn acipn caipn pacin apcin pcain cpain acpin capin
Note: these 'words' (valid or invalid) are all the permutations of the word nipac. These words are obtained by scrambling the letters in nipac.