C13131221323331323131323132323213231323131323223313233313233313232113313223111   >>    C1313122132333132313132313232321323132313132322331323331323331323211331322311   <<    C13131221323331323131323132323213231323131323223313233313233313232113313223113   >>      C13131221323331323131323132323213231323131323223313233313233313232113313223112   >>