D13133313221323331323331313113313233313231322331323132313232211321   >>    D1313331322132333132333131311331323331323132233132313231323221132   <<    D13133313221323331323331313113313233313231322331323132313232211323   >>      D13133313221323331323331313113313233313231322331323132313232211322   >>