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