C3132121111133313233121111331333133313331333133313331333133313232212133313121   >>    C313212111113331323312111133133313331333133313331333133313331323221213331312   <<    C3132121111133313233121111331333133313331333133313331333133313232212133313123   >>      C3132121111133313233121111331333133313331333133313331333133313232212133313122   >>