ОСЛИН
Сеть Лексической Информации Открытого Доступа для Русского языка

Database of Russian Verbal Aspect

Verbal Cluster

Cluster base: достигать

lookup verbдостигать(imperfective)
perfective of достигать (imperfective)достичь(perfective)
perfective of достигать (imperfective)достигнуть(perfective)

3 verbs in cluster (also include non-verbs)

under
construction