C11112331333132311331333133313331333132313233313112211232233131   >>    C1111233133313231133133313331333133313231323331311221123223313   <<    C11112331333132311331333133313331333132313233313112211232233133   >>      C11112331333132311331333133313331333132313233313112211232233132   >>