English verb conjugation
CAN GROSS

Regular verb: gross - grossed - grossed

Affirmation

Simple form	V-ing form
I can gross you can gross he can gross we can gross you can gross they can gross	I can be grossing you can be grossing he can be grossing we can be grossing you can be grossing they can be grossing
Perfect	V-ing perfect
I can have grossed you can have grossed he can have grossed we can have grossed you can have grossed they can have grossed	I can have been grossing you can have been grossing he can have been grossing we can have been grossing you can have been grossing they can have been grossing

Negation

Simple form	V-ing form
I can't gross you can't gross he can't gross we can't gross you can't gross they can't gross	I can't be grossing you can't be grossing he can't be grossing we can't be grossing you can't be grossing they can't be grossing
Perfect	V-ing perfect
I can't have grossed you can't have grossed he can't have grossed we can't have grossed you can't have grossed they can't have grossed	I can't have been grossing you can't have been grossing he can't have been grossing we can't have been grossing you can't have been grossing they can't have been grossing

Interrogative form

Simple form	V-ing form
can I gross? can you gross? can he gross? can we gross? can you gross? can they gross?	can I be grossing? can you be grossing? can he be grossing? can we be grossing? can you be grossing? can they be grossing?
Perfect	V-ing perfect
can I have grossed? can you have grossed? can he have grossed? can we have grossed? can you have grossed? can they have grossed?	can I have been grossing? can you have been grossing? can he have been grossing? can we have been grossing? can you have been grossing? can they have been grossing?

Interro-negative form

Simple form	V-ing form
can't I gross? can't you gross? can't he gross? can't we gross? can't you gross? can't they gross?	can't I be grossing? can't you be grossing? can't he be grossing? can't we be grossing? can't you be grossing? can't they be grossing?
Perfect	V-ing perfect
can't I have grossed? can't you have grossed? can't he have grossed? can't we have grossed? can't you have grossed? can't they have grossed?	can't I have been grossing? can't you have been grossing? can't he have been grossing? can't we have been grossing? can't you have been grossing? can't they have been grossing?