can stuff
Verbo regular: stuff - stuffed- stuffed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can stuff
you can stuff
he can stuff
we can stuff
you can stuff
they can stuff 	I can be stuffing
you can be stuffing
he can be stuffing
we can be stuffing
you can be stuffing
they can be stuffing	I can have stuffed
you can have stuffed
he can have stuffed
we can have stuffed
you can have stuffed
they can have stuffed	I can have been stuffing
you can have been stuffing
he can have been stuffing
we can have been stuffing
you can have been stuffing
they can have been stuffing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can't stuff
you can't stuff
he can't stuff
we can't stuff
you can't stuff
they can't stuff 	I can't be stuffing
you can't be stuffing
he can't be stuffing
we can't be stuffing
you can't be stuffing
they can't be stuffing	I can't have stuffed
you can't have stuffed
he can't have stuffed
we can't have stuffed
you can't have stuffed
they can't have stuffed	I can't have been stuffing
you can't have been stuffing
he can't have been stuffing
we can't have been stuffing
you can't have been stuffing
they can't have been stuffing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I stuff?
can you stuff?
can he stuff?
can we stuff?
can you stuff?
can they stuff? 	can I be stuffing?
can you be stuffing?
can he be stuffing?
can we be stuffing?
can you be stuffing?
can they be stuffing? 	can I have stuffed?
can you have stuffed?
can he have stuffed?
can we have stuffed?
can you have stuffed?
can they have stuffed? 	can I have been stuffing?
can you have been stuffing?
can he have been stuffing?
can we have been stuffing?
can you have been stuffing?
can they have been stuffing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can't I stuff?
can't you stuff?
can't he stuff?
can't we stuff?
can't you stuff?
can't they stuff? 	can't I be stuffing?
can't you be stuffing?
can't he be stuffing?
can't we be stuffing?
can't you be stuffing?
can't they be stuffing? 	can't I have stuffed?
can't you have stuffed?
can't he have stuffed?
can't we have stuffed?
can't you have stuffed?
can't they have stuffed? 	can't I have been stuffing?
can't you have been stuffing?
can't he have been stuffing?
can't we have been stuffing?
can't you have been stuffing?
can't they have been stuffing?