C11112331333132311331333133313331333132313233313331333132233132312121   >>    C1111233133313231133133313331333133313231323331333133313223313231212   <<    C11112331333132311331333133313331333132313233313331333132233132312123   >>      C11112331333132311331333133313331333132313233313331333132233132312122   >>