C111123313121111121111331333133313331322121111331333133313331331121111121212321   >>    C11112331312111112111133133313331333132212111133133313331333133112111112121232   <<    C111123313121111121111331333133313331322121111331333133313331331121111121212323   >>      C111123313121111121111331333133313331322121111331333133313331331121111121212322   >>