C1111133313331323223313331333133313331323131211113313132312123311   >>    C111113331333132322331333133313331333132313121111331313231212331   <<    C1111133313331323223313331333133313331323131211113313132312123313   >>      C1111133313331323223313331333133313331323131211113313132312123312   >>