C212313222213113313112113121111331323132233133313221211111323221111   >>    C21231322221311331311211312111133132313223313331322121111132322111   <<    C212313222213113313112113121111331323132233133313221211111323221113   >>      C212313222213113313112113121111331323132233133313221211111323221112   >>