muils umils miuls imuls uimls iumls mulis umlis mluis lmuis ulmis lumis milus imlus mlius lmius ilmus limus uilms iulms ulims luims ilums liums muisl umisl miusl imusl uimsl iumsl musil umsil msuil smuil usmil sumil misul imsul msiul smiul ismul simul uisml iusml usiml suiml isuml siuml mulsi umlsi mlusi lmusi ulmsi lumsi musli umsli msuli smuli usmli sumli mlsui lmsui mslui smlui lsmui slmui ulsmi lusmi uslmi sulmi lsumi slumi milsu imlsu mlisu lmisu ilmsu limsu mislu imslu msilu smilu ismlu simlu mlsiu lmsiu msliu smliu lsmiu slmiu ilsmu lismu islmu silmu lsimu slimu uilsm iulsm ulism luism ilusm liusm uislm iuslm usilm suilm isulm siulm ulsim lusim uslim sulim lsuim sluim ilsum lisum islum silum lsium slium
Note: these 'words' (valid or invalid) are all the permutations of the word muils. These words are obtained by scrambling the letters in muils.