John,Sue
John,Paul
John,Mary
Sue,John
Sue,Lisa
Sue,Peter
Sue,Richard
Sue,Helen
Paul,Helen
Paul,Mary
Paul,Claire
Mary,Helen
Mary,Claire
Mary,John
Claire,Helen
Lisa,Helen
Lisa,Peter
Helen,Claire
Helen,Paul
Helen,Mary
Helen,Lisa
Helen,Sue
Richard,Sue
Peter,Sue
Peter,Lisa