C11112331312111112111133133313331333133313331333133313331211113313231221131   >>    C1111233131211111211113313331333133313331333133313331333121111331323122113   <<    C11112331312111112111133133313331333133313331333133313331211113313231221133   >>      C11112331312111112111133133313331333133313331333133313331211113313231221132   >>