C111123313331323113313331333133313331323132333132333132313113311321   >>    C11112331333132311331333133313331333132313233313233313231311331132   <<    C111123313331323113313331333133313331323132333132333132313113311323   >>      C111123313331323113313331333133313331323132333132333132313113311322   >>