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