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