C1121221313331313231323132213231323133313231311233132333132322332211   >>    C112122131333131323132313221323132313331323131123313233313232233221   <<    C1121221313331313231323132213231323133313231311233132333132322332213   >>      C1121221313331313231323132213231323133313231311233132333132322332212   >>