C111123313331323113313331333133313331323132333132333132313113313231322321211   >>    C11112331333132311331333133313331333132313233313233313231311331323132232121   <<    C111123313331323113313331333133313331323132333132333132313113313231322321213   >>      C111123313331323113313331333133313331323132333132333132313113313231322321212   >>