D2311231323331322331313232233132322331311221123231323132312312321   >>    D231123132333132233131323223313232233131122112323132313231231232   <<    D2311231323331322331313232233132322331311221123231323132312312323   >>      D2311231323331322331313232233132322331311221123231323132312312322   >>