artis ratis atris taris rtais trais arits raits airts iarts riats irats atirs tairs aitrs iatrs tiars itars rtias trias ritas irtas tiras itras artsi ratsi atrsi tarsi rtasi trasi arsti rasti asrti sarti rsati srati atsri tasri astri satri tsari stari rtsai trsai rstai srtai tsrai strai arist raist airst iarst riast irast arsit rasit asrit sarit rsait srait aisrt iasrt asirt sairt isart siart risat irsat rsiat sriat israt sirat atisr taisr aitsr iatsr tiasr itasr atsir tasir astir satir tsair stair aistr iastr asitr saitr isatr siatr tisar itsar tsiar stiar istar sitar rtisa trisa ritsa irtsa tirsa itrsa rtsia trsia rstia srtia tsria stria rista irsta rsita srita isrta sirta tisra itsra tsira stira istra sitra
Note: these 'words' (valid or invalid) are all the permutations of the word artis. These words are obtained by scrambling the letters in artis.