C21321133133313121211113313331323133313231333132233132313331333132331223321   >>    C2132113313331312121111331333132313331323133313223313231333133313233122332   <<    C21321133133313121211113313331323133313231333132233132313331333132331223323   >>      C21321133133313121211113313331323133313231333132233132313331333132331223322   >>