C31232233133313221211113313331333133313331212111133133311233133313223231   >>    C3123223313331322121111331333133313331333121211113313331123313331322323   <<    C31232233133313221211113313331333133313331212111133133311233133313223233   >>      C31232233133313221211113313331333133313331212111133133311233133313223232   >>