English verb conjugation
CAN GRIP

Regular verb: grip - gripped - gripped

Affirmation

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

Negation

Simple form	V-ing form
I can't grip you can't grip he can't grip we can't grip you can't grip they can't grip	I can't be gripping you can't be gripping he can't be gripping we can't be gripping you can't be gripping they can't be gripping
Perfect	V-ing perfect
I can't have gripped you can't have gripped he can't have gripped we can't have gripped you can't have gripped they can't have gripped	I can't have been gripping you can't have been gripping he can't have been gripping we can't have been gripping you can't have been gripping they can't have been gripping

Interrogative form

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

Interro-negative form

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