D131333132213233313233313231231232333132322331311331323331323121212121   >>    D13133313221323331323331323123123233313232233131133132333132312121212   <<    D131333132213233313233313231231232333132322331311331323331323121212123   >>      D131333132213233313233313231231232333132322331311331323331323121212122   >>