D1212132333131322331323331313131323132322331313132333132313231232331   >>    D121213233313132233132333131313132313232233131313233313231323123233   <<    D1212132333131322331323331313131323132322331313132333132313231232333   >>      D1212132333131322331323331313131323132322331313132333132313231232332   >>