viold ivold voild ovild iovld oivld vilod ivlod vliod lviod ilvod livod volid ovlid vloid lvoid olvid lovid iolvd oilvd ilovd liovd olivd loivd viodl ivodl voidl ovidl iovdl oivdl vidol ivdol vdiol dviol idvol divol vodil ovdil vdoil dvoil odvil dovil iodvl oidvl idovl diovl odivl doivl vildo ivldo vlido lvido ilvdo livdo vidlo ivdlo vdilo dvilo idvlo divlo vldio lvdio vdlio dvlio ldvio dlvio ildvo lidvo idlvo dilvo ldivo dlivo voldi ovldi vlodi lvodi olvdi lovdi vodli ovdli vdoli dvoli odvli dovli vldoi lvdoi vdloi dvloi ldvoi dlvoi oldvi lodvi odlvi dolvi ldovi dlovi ioldv oildv ilodv liodv olidv loidv iodlv oidlv idolv diolv odilv doilv ildov lidov idlov dilov ldiov dliov oldiv lodiv odliv doliv ldoiv dloiv
Note: these 'words' (valid or invalid) are all the permutations of the word viold. These words are obtained by scrambling the letters in viold.