C111123313331323113313331333133313331323123231333133313113311233321   >>    C11112331333132311331333133313331333132312323133313331311331123332   <<    C111123313331323113313331333133313331323123231333133313113311233323   >>      C111123313331323113313331333133313331323123231333133313113311233322   >>