C21321133133313121211113313331323133313231333132233131133223311   >>    C2132113313331312121111331333132313331323133313223313113322331   <<    C21321133133313121211113313331323133313231333132233131133223313   >>      C21321133133313121211113313331323133313231333132233131133223312   >>