[['year', "men 's singles", "women 's singles", "men 's doubles", "women 's doubles", 'mixed doubles'], ['1969', 'flemming delfs', 'anne berglund', 'keit arthur ray stevens', 'joke van beusekom marjan luesken', 'gert perneklo karin lindqvist'], ['1971', 'rob ridder', 'anne berglund', 'peter gardner john stretch', 'anne berglund lene køppen', 'peter gardner barbara giles'], ['1973', 'jesper helledie', 'mette myhre', 'stefan karlsson willy nilson', 'ann forest kathleen whiting', 'jesper helledie susanne johansen'], ['1975', 'bruno wackfelt', 'pia nielsen', 'bruno wackfelt goran sterner', 'lise lotte gottsche lilli b pedersen', 'tim stokes karen puttick'], ['1977', 'andy goode', 'karen bridge', 'jesper toftlund niels christensen', 'karen bridge karen puttick', 'nigel tier karen puttick'], ['1979', 'jens peter nierhoff', 'kirsten larsen', 'peter isaksson jan erik antonsson', 'sally leadbeater gillian clark', 'jens peter nierhoff charlotte pilgaard'], ['1981', 'michael kjeldsen', 'helen troke', 'michael kjeldsen mark christiansen', 'dorte kjaer nettie nielsen', 'dipak tailor mary leeves'], ['1983', 'claus thomsen', 'helen troke', 'christopher rees lyndon williams', 'lisa chapman jane shipman', 'anders nielsen gitte paulsen'], ['1985', 'matthew smith', 'lisbeth stuer - lauridsen', 'jan paulsen lars pedersen', 'lisbeth stuer - lauridsen lotte olsen', 'jan paulsen marian christiansen'], ['1987', 'pontus jantti', 'helle andersen', 'michael søgaard jens maibom', 'catrine bengtsson margit borg', 'jens maibom charlotte madsen'], ['1989', 'thomas stuer - lauridsen', 'camilla martin', 'thomas stuer - lauridsen christian jacobsen', 'marlene thomsen trine johansson', 'christian jacobsen marlene thomsen'], ['1991', 'jürgen koch', 'lotte thomsen', 'martin l hansen peter christensen', 'trine pedersen mette pedersen', 'peter christensen rikke broen'], ['1993', 'jim laugesen', 'mette sørensen', 'jim laugesen janek roos', 'mette sørensen rikke olsen', 'thomas stavnsgaard sara runesten'], ['1995', 'peter gade', 'brenda beenhakker', 'peter gade peder nissen', 'joanne wright donna kellogg', 'peder nissen mette hansen'], ['1997', 'dicky palyama', 'judith meulendijks', 'kasper ødum ove svejstrup', 'lene mork jane bramsen', 'ove svejstrup britta andersen'], ['1999', 'björn joppien', 'petra overzier', 'mathias boe kasper kim jensen', 'petra overzier anne honscheid', 'mathias boe karina sørensen'], ['2001', 'eric pang', 'juliane schenk', 'carsten mogensen rasmus andersen', 'kamila augustyn nadiezda kostiuczyk', 'rasmus andersen mette nielsen'], ['2003', 'marc zwiebler', 'larisa griga', 'mikkel delbo larsen martin bille larsen', 'nina vislova valeria sorokina', 'marc zwiebler birgit overzier'], ['2005', 'rajiv ouseph', 'janet köhler', 'rasmus bonde kasper henriksen', 'nina vislova olga kozlova', 'rasmus bonde christinna pedersen'], ['2007', 'mads conrad petersen', 'karina jürgensen', 'peter mills chris adcock', 'kristina ludikova olga konon', 'christian larsen joan christiansen'], ['2009', 'emil holst', 'anne hald', 'sylvain grosjean sam magee', 'anastasia chervyakova romina gabdullina', 'jacco arends selena piek'], ['2011', 'viktor axelsen', 'carolina marín', 'christopher coles matthew nottingham', 'mette poulsen ditte strunge larsen', 'kim astrup sørensen line kjaersfeldt'], ['2013', 'fabian roth', 'stefani stoeva', 'oliver babic kasper antonsen', 'stefani stoeva gabriela stoeva', 'david daugard maiken fruergaard']]
both Anne Berglund and Helen Troke won back to back Woman 's Single Championship
both [ENT] and [ENT] won back to back [ENT] [ENT]