English verb conjugation
COULD GRIP

Regular verb: grip - gripped - gripped

Affirmation

Simple form	V-ing form
I could grip you could grip she could grip we could grip you could grip they could grip	I could be gripping you could be gripping she could be gripping we could be gripping you could be gripping they could be gripping
Perfect	V-ing perfect
I could have gripped you could have gripped she could have gripped we could have gripped you could have gripped they could have gripped	I could have been gripping you could have been gripping she could have been gripping we could have been gripping you could have been gripping they could have been gripping

Negation

Simple form	V-ing form
I could not grip you could not grip she could not grip we could not grip you could not grip they could not grip	I could not be gripping you could not be gripping she could not be gripping we could not be gripping you could not be gripping they could not be gripping
Perfect	V-ing perfect
I could not have gripped you could not have gripped she could not have gripped we could not have gripped you could not have gripped they could not have gripped	I could not have been gripping you could not have been gripping she could not have been gripping we could not have been gripping you could not have been gripping they could not have been gripping

Interrogative form

Simple form	V-ing form
could I grip? could you grip? could she grip? could we grip? could you grip? could they grip?	could I be gripping? could you be gripping? could she be gripping? could we be gripping? could you be gripping? could they be gripping?
Perfect	V-ing perfect
could I have gripped? could you have gripped? could she have gripped? could we have gripped? could you have gripped? could they have gripped?	could I have been gripping? could you have been gripping? could she have been gripping? could we have been gripping? could you have been gripping? could they have been gripping?

Interro-negative form

Simple form	V-ing form
could I not grip? could you not grip? could she not grip? could we not grip? could you not grip? could they not grip?	could I not be gripping? could you not be gripping? could she not be gripping? could we not be gripping? could you not be gripping? could they not be gripping?
Perfect	V-ing perfect
could I not have gripped? could you not have gripped? could she not have gripped? could we not have gripped? could you not have gripped? could they not have gripped?	could I not have been gripping? could you not have been gripping? could she not have been gripping? could we not have been gripping? could you not have been gripping? could they not have been gripping?