C3132121111133313233121111331333133313331312121111133313331321123223321   >>    C313212111113331323312111133133313331333131212111113331333132112322332   <<    C3132121111133313233121111331333133313331312121111133313331321123223323   >>      C3132121111133313233121111331333133313331312121111133313331321123223322   >>