C3132121111133313233121111331333133313331333133313331333131133133313233211   >>    C313212111113331323312111133133313331333133313331333133313113313331323321   <<    C3132121111133313233121111331333133313331333133313331333131133133313233213   >>      C3132121111133313233121111331333133313331333133313331333131133133313233212   >>