C1112212323132313132313132313232233131323231323133313231322222311   >>    C111221232313231313231313231323223313132323132313331323132222231   <<    C1112212323132313132313132313232233131323231323133313231322222313   >>      C1112212323132313132313132313232233131323231323133313231322222312   >>