C11112331312111112111133133313331333133311222121111113313331322221121131   >>    C1111233131211111211113313331333133313331122212111111331333132222112113   <<    C11112331312111112111133133313331333133311222121111113313331322221121133   >>      C11112331312111112111133133313331333133311222121111113313331322221121132   >>