C111123313331323113313331323133313331311331311331333132233132313232233121   >>    C11112331333132311331333132313331333131133131133133313223313231323223312   <<    C111123313331323113313331323133313331311331311331333132233132313232233123   >>      C111123313331323113313331323133313331311331311331333132233132313232233122   >>