D1313331322132333132333131311331323331323132233132312323132322121   >>    D131333132213233313233313131133132333132313223313231232313232212   <<    D1313331322132333132333131311331323331323132233132312323132322123   >>      D1313331322132333132333131311331323331323132233132312323132322122   >>