D233313133313221323132333131313231322331323331323231323133313231231231   >>    D23331313331322132313233313131323132233132333132323132313331323123123   <<    D233313133313221323132333131313231322331323331323231323133313231231233   >>      D233313133313221323132333131313231322331323331323231323133313231231232   >>