C1121221313331313231323132213231323133313231311233132333132313231232321   >>    C112122131333131323132313221323132313331323131123313233313231323123232   <<    C1121221313331313231323132213231323133313231311233132333132313231232323   >>      C1121221313331313231323132213231323133313231311233132333132313231232322   >>