All verbs with the suffix -ыва- or -ива- are Imperfective. Their Perfective partners may have various suffixes:
Perfective Conjugation Imperfective Conjugation
спросќть (2) MS -прћсят, -прошџ спрђшивать (*) SS -ают
рассказђть (12) MS -кђжут, -кажџ расскђзывать (*) SS -ают
For the benefit of the readers of Beginning Russian, the verbs are listed with the lesson number of their first occurrence. The new partners are marked with an asterisk. The list covers Lessons 1 - 62.