C11112331312111112111133133313331333133311222121111133313332313331322233111   >>    C1111233131211111211113313331333133313331122212111113331333231333132223311   <<    C11112331312111112111133133313331333133311222121111133313332313331322233113   >>      C11112331312111112111133133313331333133311222121111133313332313331322233112   >>