essen : 1  germany : 1  may : 1  DD : 6  afp : 1  the : 5  german : 1  company : 2  ruhrgas : 5  has : 1  increased : 1  its : 1  share : 1  in : 3  giant : 1  russian : 1  gas : 1  gazprom : 2  to : 2  four : 1  percent : 3  from : 1  D : 5  announced : 1  here : 1  on : 1  tuesday : 1  chief : 1  friedrich : 1  spaeth : 1  estimated : 1  last : 2  week : 1  cost : 1  of : 3  transaction : 1  at : 1  DDD : 8  million : 8  marks : 4  euros : 4  dollars : 2  december : 1  had : 2  acquired : 1  stock : 1  for : 1  about : 1  and : 1  said : 1  it : 1  was : 2  interested : 1  buying : 1  more : 1  turnover : 1  billion : 2  DDDD : 1  less : 1  than : 1  previous : 1  year : 1  net : 1  profit : 1  up : 1  however : 1  by : 1  