C13131221323331323131323132323213231323131323223313233313231313331321   >>    C1313122132333132313132313232321323132313132322331323331323131333132   <<    C13131221323331323131323132323213231323131323223313233313231313331323   >>      C13131221323331323131323132323213231323131323223313233313231313331322   >>