concentrar to concentrateFuture Perfect Subjunctive / Futuro Perfecto de Subjuntivoyohubiere concentradotúhubieres concentradoél / Ud.hubiere concentradonosotroshubiéremos concentradovosotroshubiereis concentradoellos / Uds.hubieren concentrado
Other Tenses / Moods of Concentrar 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