C11112331333132311331333133313331333132312323133313113313113311212121   >>    C1111233133313231133133313331333133313231232313331311331311331121212   <<    C11112331333132311331333133313331333132312323133313113313113311212123   >>      C11112331333132311331333133313331333132312323133313113313113311212122   >>