D233313133313221323132333131311331323331333131123311233132211211   >>    D23331313331322132313233313131133132333133313112331123313221121   <<    D233313133313221323132333131311331323331333131123311233132211213   >>      D233313133313221323132333131311331323331333131123311233132211212   >>