The aorist participle (whole-action aspect; usually antecedent to the main verb) and the perfect participle. Drill the active (λύσας), middle/passive (λυθείς), and perfect (λελυκώς/λελυμένος) forms, the time-relationship to the main verb, and translation of participle chains in NT context. Unlock each subtopic by scoring at least 90% on its mastery check.