concernirto concernregular verb concern· ir IR Present Subjunctive Preterite Imp.Subj. Future Conditional Imperfect yo tú él nosotros vosotros ellos concern o concern a concern í concern iera concern iré concern iría concern ía concern es concern as concern iste concern ieras concern irás concern irías concern ías concern e concern a concern ió concern iera concern irá concern iría concern ía concern imos concern amos concern imos concern iéramos concern iremos concern iríamos concern íamos concern ís concern áis concern isteis concern ierais concern iréis concern iríais concern íais concern en concern an concern ieron concern ieran concern irán concern irían concern ían Gerund: concern iendo Participle: concern ido