C1121221313331313231323132213231323133313231311233132333132323311311   >>    C112122131333131323132313221323132313331323131123313233313232331131   <<    C1121221313331313231323132213231323133313231311233132333132323311313   >>      C1121221313331313231323132213231323133313231311233132333132323311312   >>