English verb conjugation
CAN GROWL

Regular verb: growl - growled - growled

Affirmation

Simple form	V-ing form
I can growl you can growl he can growl we can growl you can growl they can growl	I can be growling you can be growling he can be growling we can be growling you can be growling they can be growling
Perfect	V-ing perfect
I can have growled you can have growled he can have growled we can have growled you can have growled they can have growled	I can have been growling you can have been growling he can have been growling we can have been growling you can have been growling they can have been growling

Negation

Simple form	V-ing form
I cannot growl you cannot growl he cannot growl we cannot growl you cannot growl they cannot growl	I cannot be growling you cannot be growling he cannot be growling we cannot be growling you cannot be growling they cannot be growling
Perfect	V-ing perfect
I cannot have growled you cannot have growled he cannot have growled we cannot have growled you cannot have growled they cannot have growled	I cannot have been growling you cannot have been growling he cannot have been growling we cannot have been growling you cannot have been growling they cannot have been growling

Interrogative form

Simple form	V-ing form
can I growl? can you growl? can he growl? can we growl? can you growl? can they growl?	can I be growling? can you be growling? can he be growling? can we be growling? can you be growling? can they be growling?
Perfect	V-ing perfect
can I have growled? can you have growled? can he have growled? can we have growled? can you have growled? can they have growled?	can I have been growling? can you have been growling? can he have been growling? can we have been growling? can you have been growling? can they have been growling?

Interro-negative form

Simple form	V-ing form
can I not growl? can you not growl? can he not growl? can we not growl? can you not growl? can they not growl?	can I not be growling? can you not be growling? can he not be growling? can we not be growling? can you not be growling? can they not be growling?
Perfect	V-ing perfect
can I not have growled? can you not have growled? can he not have growled? can we not have growled? can you not have growled? can they not have growled?	can I not have been growling? can you not have been growling? can he not have been growling? can we not have been growling? can you not have been growling? can they not have been growling?