D2311231323331322331313232233132333132312111133132313231333132212321   >>    D231123132333132233131323223313233313231211113313231323133313221232   <<    D2311231323331322331313232233132333132312111133132313231333132212323   >>      D2311231323331322331313232233132333132312111133132313231333132212322   >>