C121212123112323223313132322331323133313232211331323132333132322332311   >>    C12121212311232322331313232233132313331323221133132313233313232233231   <<    C121212123112323223313132322331323133313232211331323132333132322332313   >>      C121212123112323223313132322331323133313232211331323132333132322332312   >>