hubieren estado
-they/you will have been
Future perfect subjunctiveellos/ellas/ustedesconjugation ofestar.

estar

Esto resulta preocupante, independientemente de la gravedad de los hechos en que hubieren estado involucrados, en lo que se refiere al respeto de su derecho a un debido proceso.
This is a matter of concern, regardless of the seriousness of the acts in which they may have been involved, with regard to respect for their right to due process.
Word of the Day
haunted