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