Lexicon of Old Church Slavonic Verbs
stem classes full lexicon
aorist aH-stems: root of the verb ending in a reflex of long *-ā
sta (staH-), bra (bor-), raspra (por-), kla (kol-), prija (priaH-), staja (staH-), taja (taH-), zna (znaH-), dastъ (da-)