C3132121111133313233121111331333133313331333133313331333133313331311312121221   >>    C313212111113331323312111133133313331333133313331333133313331333131131212122   <<    C3132121111133313233121111331333133313331333133313331333133313331311312121223   >>      C3132121111133313233121111331333133313331333133313331333133313331311312121222   >>