How many movies have Ana Obregón and Hans Burmann collaborated on?

They have worked on 4 movies together! Their first movie together was Sentados al borde de la mañana con los pies colgando (1978) while their highest rated movie together was Me olvidé de vivir (1980). They have not worked together since El gran Serafín (1987). They are most known for their drama films together.