can brood
Regular verb: brood - brooded- brooded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can brood
you can brood
she can brood
we can brood
you can brood
they can brood 	I can be brooding
you can be brooding
she can be brooding
we can be brooding
you can be brooding
they can be brooding	I can have brooded
you can have brooded
she can have brooded
we can have brooded
you can have brooded
they can have brooded	I can have been brooding
you can have been brooding
she can have been brooding
we can have been brooding
you can have been brooding
they can have been brooding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot brood
you cannot brood
she cannot brood
we cannot brood
you cannot brood
they cannot brood 	I cannot be brooding
you cannot be brooding
she cannot be brooding
we cannot be brooding
you cannot be brooding
they cannot be brooding	I cannot have brooded
you cannot have brooded
she cannot have brooded
we cannot have brooded
you cannot have brooded
they cannot have brooded	I cannot have been brooding
you cannot have been brooding
she cannot have been brooding
we cannot have been brooding
you cannot have been brooding
they cannot have been brooding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I brood?
can you brood?
can she brood?
can we brood?
can you brood?
can they brood? 	can I be brooding?
can you be brooding?
can she be brooding?
can we be brooding?
can you be brooding?
can they be brooding? 	can I have brooded?
can you have brooded?
can she have brooded?
can we have brooded?
can you have brooded?
can they have brooded? 	can I have been brooding?
can you have been brooding?
can she have been brooding?
can we have been brooding?
can you have been brooding?
can they have been brooding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not brood?
can you not brood?
can she not brood?
can we not brood?
can you not brood?
can they not brood? 	can I not be brooding?
can you not be brooding?
can she not be brooding?
can we not be brooding?
can you not be brooding?
can they not be brooding? 	can I not have brooded?
can you not have brooded?
can she not have brooded?
can we not have brooded?
can you not have brooded?
can they not have brooded? 	can I not have been brooding?
can you not have been brooding?
can she not have been brooding?
can we not have been brooding?
can you not have been brooding?
can they not have been brooding?