C1212122313132322331313232233132333132333132222132313231323132311311   >>    C121212231313232233131323223313233313233313222213231323132313231131   <<    C1212122313132322331313232233132333132333132222132313231323132311313   >>      C1212122313132322331313232233132333132333132222132313231323132311312   >>