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