C21321133133313121211113313331323133313231333132233132313133311211331   >>    C2132113313331312121111331333132313331323133313223313231313331121133   <<    C21321133133313121211113313331323133313231333132233132313133311211333   >>      C21321133133313121211113313331323133313231333132233132313133311211332   >>