C11112331312111112111133133313331333133313331333133313331211113313231323311321   >>    C1111233131211111211113313331333133313331333133313331333121111331323132331132   <<    C11112331312111112111133133313331333133313331333133313331211113313231323311323   >>      C11112331312111112111133133313331333133313331333133313331211113313231323311322   >>