C3132121111133313233121111331333133313331333133313331333133313113313223332211   >>    C313212111113331323312111133133313331333133313331333133313331311331322333221   <<    C3132121111133313233121111331333133313331333133313331333133313113313223332213   >>      C3132121111133313233121111331333133313331333133313331333133313113313223332212   >>