rains arins rians irans airns iarns ranis arnis rnais nrais anris naris rinas irnas rnias nrias inras niras ainrs ianrs anirs nairs inars niars raisn arisn riasn irasn airsn iarsn rasin arsin rsain srain asrin sarin risan irsan rsian srian isran siran aisrn iasrn asirn sairn isarn siarn ransi arnsi rnasi nrasi anrsi narsi rasni arsni rsani srani asrni sarni rnsai nrsai rsnai srnai nsrai snrai ansri nasri asnri sanri nsari snari rinsa irnsa rnisa nrisa inrsa nirsa risna irsna rsina srina isrna sirna rnsia nrsia rsnia srnia nsria snria insra nisra isnra sinra nsira snira ainsr iansr anisr naisr inasr niasr aisnr iasnr asinr sainr isanr sianr ansir nasir asnir sanir nsair snair insar nisar isnar sinar nsiar sniar
Note: these 'words' (valid or invalid) are all the permutations of the word rains. These words are obtained by scrambling the letters in rains.