C111123313331323113313331333133313331323112133313331333121111133313311221323321   >>    C11112331333132311331333133313331333132311213331333133312111113331331122132332   <<    C111123313331323113313331333133313331323112133313331333121111133313311221323323   >>      C111123313331323113313331333133313331323112133313331333121111133313311221323322   >>