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 couldn't grip you couldn't grip he couldn't grip we couldn't grip you couldn't grip they couldn't grip	I couldn't be gripping you couldn't be gripping he couldn't be gripping we couldn't be gripping you couldn't be gripping they couldn't be gripping
Perfect	V-ing perfect
I couldn't have gripped you couldn't have gripped he couldn't have gripped we couldn't have gripped you couldn't have gripped they couldn't have gripped	I couldn't have been gripping you couldn't have been gripping he couldn't have been gripping we couldn't have been gripping you couldn't have been gripping they couldn't 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
couldn't I grip? couldn't you grip? couldn't he grip? couldn't we grip? couldn't you grip? couldn't they grip?	couldn't I be gripping? couldn't you be gripping? couldn't he be gripping? couldn't we be gripping? couldn't you be gripping? couldn't they be gripping?
Perfect	V-ing perfect
couldn't I have gripped? couldn't you have gripped? couldn't he have gripped? couldn't we have gripped? couldn't you have gripped? couldn't they have gripped?	couldn't I have been gripping? couldn't you have been gripping? couldn't he have been gripping? couldn't we have been gripping? couldn't you have been gripping? couldn't they have been gripping?