C13131221323331323131323132323213231323131323223313233313233313232112323131   >>    C1313122132333132313132313232321323132313132322331323331323331323211232313   <<    C13131221323331323131323132323213231323131323223313233313233313232112323133   >>      C13131221323331323131323132323213231323131323223313233313233313232112323132   >>