C11112331312111112111133133313331333132322121111331123313231322222131   >>    C1111233131211111211113313331333133313232212111133112331323132222213   <<    C11112331312111112111133133313331333132322121111331123313231322222133   >>      C11112331312111112111133133313331333132322121111331123313231322222132   >>