[FIX] bug in mason2
[FIX] bug in mason2

bestrauc/seqan,bestrauc/seqan,xenigmax/seqan,bestrauc/seqan,xenigmax/seqan,xenigmax/seqan,bestrauc/seqan,bestrauc/seqan,bestrauc/seqan,xenigmax/seqan,xenigmax/seqan,xenigmax/seqan,bestrauc/seqan,xenigmax/seqan,xenigmax/seqan,bestrauc/seqan