C212313222213113313112113121111331323132233133313221211111333132213222321   >>    C21231322221311331311211312111133132313223313331322121111133313221322232   <<    C212313222213113313112113121111331323132233133313221211111333132213222323   >>      C212313222213113313112113121111331323132233133313221211111333132213222322   >>