English verb conjugation
COULD GRIP

Regular verb: grip - gripped - gripped

Affirmation

Simple form	V-ing form
I could grip you could grip he could grip we could grip you could grip they could grip	I could be gripping you could be gripping he 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 he 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 he 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 he 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 he 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 he 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 he 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 he grip? could we grip? could you grip? could they grip?	could I be gripping? could you be gripping? could he 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 he 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 he 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 he 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 he 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 he 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 he not have been gripping? could we not have been gripping? could you not have been gripping? could they not have been gripping?