D2311231323331322331313232233132322331311221123231323132322132313221   >>    D231123132333132233131323223313232233131122112323132313232213231322   <<    D2311231323331322331313232233132322331311221123231323132322132313223   >>      D2311231323331322331313232233132322331311221123231323132322132313222   >>