contribuir to contributeFuture Perfect Subjunctive / Futuro Perfecto de Subjuntivoyohubiere contribuidotúhubieres contribuidoél / Ud.hubiere contribuidonosotroshubiéremos contribuidovosotroshubiereis contribuidoellos / Uds.hubieren contribuido
Other Tenses / Moods of Contribuir Simple Tenses Present Tense Imperfect Tense Preterite (Past Tense) Future Tense Conditional Tense Subjunctive Tense Imperfect Subjunctive Future Subjunctive Imperative (Command) Past Participle & Gerund Compound Tenses Present Perfect Past Perfect Past Anterior (Preterite Perfect) Future Perfect Conditional Perfect Present Perfect Subjunctive Pluperfect Subjunctive Future Perfect Subjunctive