C111123313331323113313331333133313331323123231333133313113311211321   >>    C11112331333132311331333133313331333132312323133313331311331121132   <<    C111123313331323113313331333133313331323123231333133313113311211323   >>      C111123313331323113313331333133313331323123231333133313113311211322   >>