Perfect Active Infinitive

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Introduction

The perfect active infinitive is marked by /έναι:

          βε/βα/κ/έναι > βεβηκέναι
          λε/λιπ/έναι > λελοιπέναι
          ἀκ/L/ακοϝ/έναι > ἀκηκοέναι

perfect stem (BASE + perfect aspect markers)

/έναι