uplit pulit ulpit lupit pluit lpuit upilt puilt uiplt iuplt piult ipult ulipt luipt uilpt iulpt liupt ilupt pliut lpiut pilut iplut liput ilput uplti pulti ulpti lupti pluti lputi uptli putli utpli tupli ptuli tpuli ultpi lutpi utlpi tulpi ltupi tlupi pltui lptui ptlui tplui ltpui tlpui upitl puitl uiptl iuptl piutl iputl uptil putil utpil tupil ptuil tpuil uitpl iutpl utipl tuipl itupl tiupl pitul iptul ptiul tpiul itpul tipul ulitp luitp uiltp iultp liutp ilutp ultip lutip utlip tulip ltuip tluip uitlp iutlp utilp tuilp itulp tiulp litup iltup ltiup tliup itlup tilup plitu lpitu piltu ipltu liptu ilptu pltiu lptiu ptliu tpliu ltpiu tlpiu pitlu iptlu ptilu tpilu itplu tiplu litpu iltpu ltipu tlipu itlpu tilpu
Note: these 'words' (valid or invalid) are all the permutations of the word uplit. These words are obtained by scrambling the letters in uplit.