siegn isegn seign esign iesgn eisgn sigen isgen sgien gsien igsen gisen segin esgin sgein gsein egsin gesin iegsn eigsn igesn giesn egisn geisn sieng iseng seing esing iesng eisng sineg isneg snieg nsieg inseg niseg senig esnig sneig nseig ensig nesig iensg einsg inesg niesg enisg neisg signe isgne sgine gsine igsne gisne singe isnge snige nsige insge nisge sgnie gsnie sngie nsgie gnsie ngsie ignse ginse ingse nigse gnise ngise segni esgni sgeni gseni egsni gesni sengi esngi snegi nsegi ensgi nesgi sgnei gsnei sngei nsgei gnsei ngsei egnsi gensi engsi negsi gnesi ngesi iegns eigns igens giens egins geins iengs eings inegs niegs enigs neigs ignes gines inges niges gnies ngies egnis genis engis negis gneis ngeis
Note: these 'words' (valid or invalid) are all the permutations of the word siegn. These words are obtained by scrambling the letters in siegn.