C1121221313331313231323132213231323133313231311233132333132313232233132322111   >>    C112122131333131323132313221323132313331323131123313233313231323223313232211   <<    C1121221313331313231323132213231323133313231311233132333132313232233132322113   >>      C1121221313331313231323132213231323133313231311233132333132313232233132322112   >>