Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could undergo undergo you could undergo undergo he could undergo undergo we could undergo undergo you could undergo undergo they could undergo undergo
V-ing form
I could be undergo undergoing you could be undergo undergoing he could be undergo undergoing we could be undergo undergoing you could be undergo undergoing they could be undergo undergoing
Perfect
I could have undergo undergoed you could have undergo undergoed he could have undergo undergoed we could have undergo undergoed you could have undergo undergoed they could have undergo undergoed
V-ing perfect
I could have been undergo undergoing you could have been undergo undergoing he could have been undergo undergoing we could have been undergo undergoing you could have been undergo undergoing they could have been undergo undergoing
Negation
Simple form
I could not undergo undergo you could not undergo undergo he could not undergo undergo we could not undergo undergo you could not undergo undergo they could not undergo undergo
V-ing form
I could not be undergo undergoing you could not be undergo undergoing he could not be undergo undergoing we could not be undergo undergoing you could not be undergo undergoing they could not be undergo undergoing
Perfect
I could not have undergo undergoed you could not have undergo undergoed he could not have undergo undergoed we could not have undergo undergoed you could not have undergo undergoed they could not have undergo undergoed
V-ing perfect
I could not have been undergo undergoing you could not have been undergo undergoing he could not have been undergo undergoing we could not have been undergo undergoing you could not have been undergo undergoing they could not have been undergo undergoing
Interrogative form
Simple form
could I undergo undergo? could you undergo undergo? could he undergo undergo? could we undergo undergo? could you undergo undergo? could they undergo undergo?
V-ing form
could I be undergo undergoing? could you be undergo undergoing? could he be undergo undergoing? could we be undergo undergoing? could you be undergo undergoing? could they be undergo undergoing?
Perfect
could I have undergo undergoed? could you have undergo undergoed? could he have undergo undergoed? could we have undergo undergoed? could you have undergo undergoed? could they have undergo undergoed?
V-ing perfect
could I have been undergo undergoing? could you have been undergo undergoing? could he have been undergo undergoing? could we have been undergo undergoing? could you have been undergo undergoing? could they have been undergo undergoing?
Interro-negative form
Simple form
could I not undergo undergo? could you not undergo undergo? could he not undergo undergo? could we not undergo undergo? could you not undergo undergo? could they not undergo undergo?
V-ing form
could I not be undergo undergoing? could you not be undergo undergoing? could he not be undergo undergoing? could we not be undergo undergoing? could you not be undergo undergoing? could they not be undergo undergoing?
Perfect
could I not have undergo undergoed? could you not have undergo undergoed? could he not have undergo undergoed? could we not have undergo undergoed? could you not have undergo undergoed? could they not have undergo undergoed?
V-ing perfect
could I not have been undergo undergoing? could you not have been undergo undergoing? could he not have been undergo undergoing? could we not have been undergo undergoing? could you not have been undergo undergoing? could they not have been undergo undergoing?