C21321133133313121211113313331323133313231333132233132313331323121333311   >>    C2132113313331312121111331333132313331323133313223313231333132312133331   <<    C21321133133313121211113313331323133313231333132233132313331323121333313   >>      C21321133133313121211113313331323133313231333132233132313331323121333312   >>