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 cannot gross you cannot gross he cannot gross we cannot gross you cannot gross they cannot gross	I cannot be grossing you cannot be grossing he cannot be grossing we cannot be grossing you cannot be grossing they cannot be grossing
Perfect	V-ing perfect
I cannot have grossed you cannot have grossed he cannot have grossed we cannot have grossed you cannot have grossed they cannot have grossed	I cannot have been grossing you cannot have been grossing he cannot have been grossing we cannot have been grossing you cannot have been grossing they cannot 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 I not gross? can you not gross? can he not gross? can we not gross? can you not gross? can they not gross?	can I not be grossing? can you not be grossing? can he not be grossing? can we not be grossing? can you not be grossing? can they not be grossing?
Perfect	V-ing perfect
can I not have grossed? can you not have grossed? can he not have grossed? can we not have grossed? can you not have grossed? can they not have grossed?	can I not have been grossing? can you not have been grossing? can he not have been grossing? can we not have been grossing? can you not have been grossing? can they not have been grossing?