hallaren
-they will find
The word hallaren is the future subjunctive form of hallar in the third person plural.
See the full hallar conjugation

hallar

Si tanto el presidente como el vicepresidente se hallaren incapacitados, asumiría el poder el Presidente de la Cámara de Representantes.
Should both the president and the vice president become incapacitated, the power would fall to the Speaker of the House of Representatives.
Las disposiciones del Reglamento de Procedimiento del Tribunal de Primera Instancia pertinentes en la materia continuarán aplicándose, mutatis mutandis, a los asuntos que se hallaren pendientes ante el Tribunal de la Función Pública antes de dicha fecha.
The relevant provisions of the Rules of Procedure of the Court of First Instance on the subject shall continue to apply mutatis mutandis to cases pending before the Tribunal before that date.
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