In the neighborhood of 'B', Mi mi mi...:BTW, the principal parts of ἅγω may be sung to the tune of "Good King Wenceslas." Try it:
ἄγω, ἄξω, ἤγαγον, ἥχα, ἤγμαι, ἤχθην.
that is not how I would learn,
- if I wanted fluency
use each one in its own place,
- then you have it nat'rally.
(same tune)