C212313222213113313112113121111331323132233133313231323232132313221   >>    C21231322221311331311211312111133132313223313331323132323213231322   <<    C212313222213113313112113121111331323132233133313231323232132313223   >>      C212313222213113313112113121111331323132233133313231323232132313222   >>