C212313222213113313112113121111331323132233133313221211111213223311   >>    C21231322221311331311211312111133132313223313331322121111121322331   <<    C212313222213113313112113121111331323132233133313221211111213223313   >>      C212313222213113313112113121111331323132233133313221211111213223312   >>