primasen
Imperfecto de subjuntivo para el sujetoellos/ellas/ustedesdel verboprimar.

primar

Sería grave que primasen los intereses privados sobre la calidad del aire que respiramos, máxime tras la Cumbre de Kyoto.
It would be a serious matter if private interests were to take precedence over the quality of the air we breathe, especially after the Kyoto Summit. We have all noticed the alarming increase in air pollution in urban areas.
Palabra del día
la almeja