C3132121111133313233121111331333133313331333133313331333131133133313233123121   >>    C313212111113331323312111133133313331333133313331333133313113313331323312312   <<    C3132121111133313233121111331333133313331333133313331333131133133313233123123   >>      C3132121111133313233121111331333133313331333133313331333131133133313233123122   >>