spnai psnai snpai nspai pnsai npsai spani psani sapni aspni pasni apsni snapi nsapi sanpi asnpi naspi anspi pnasi npasi pansi apnsi napsi anpsi spnia psnia snpia nspia pnsia npsia spina psina sipna ispna pisna ipsna snipa nsipa sinpa isnpa nispa inspa pnisa npisa pinsa ipnsa nipsa inpsa spain psain sapin aspin pasin apsin spian psian sipan ispan pisan ipsan saipn asipn siapn isapn aispn iaspn paisn apisn piasn ipasn aipsn iapsn snaip nsaip sanip asnip nasip ansip sniap nsiap sinap isnap nisap insap sainp asinp sianp isanp aisnp iasnp naisp anisp niasp inasp ainsp iansp pnais npais panis apnis napis anpis pnias npias pinas ipnas nipas inpas pains apins pians ipans aipns iapns naips anips niaps inaps ainps ianps
Note: these 'words' (valid or invalid) are all the permutations of the word spnai. These words are obtained by scrambling the letters in spnai.