could snicker
Verbo regular: snicker - snickered- snickered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could snicker
you could snicker
he could snicker
we could snicker
you could snicker
they could snicker 	I could be snickering
you could be snickering
he could be snickering
we could be snickering
you could be snickering
they could be snickering	I could have snickered
you could have snickered
he could have snickered
we could have snickered
you could have snickered
they could have snickered	I could have been snickering
you could have been snickering
he could have been snickering
we could have been snickering
you could have been snickering
they could have been snickering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't snicker
you couldn't snicker
he couldn't snicker
we couldn't snicker
you couldn't snicker
they couldn't snicker 	I couldn't be snickering
you couldn't be snickering
he couldn't be snickering
we couldn't be snickering
you couldn't be snickering
they couldn't be snickering	I couldn't have snickered
you couldn't have snickered
he couldn't have snickered
we couldn't have snickered
you couldn't have snickered
they couldn't have snickered	I couldn't have been snickering
you couldn't have been snickering
he couldn't have been snickering
we couldn't have been snickering
you couldn't have been snickering
they couldn't have been snickering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I snicker?
could you snicker?
could he snicker?
could we snicker?
could you snicker?
could they snicker? 	could I be snickering?
could you be snickering?
could he be snickering?
could we be snickering?
could you be snickering?
could they be snickering? 	could I have snickered?
could you have snickered?
could he have snickered?
could we have snickered?
could you have snickered?
could they have snickered? 	could I have been snickering?
could you have been snickering?
could he have been snickering?
could we have been snickering?
could you have been snickering?
could they have been snickering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I snicker?
couldn't you snicker?
couldn't he snicker?
couldn't we snicker?
couldn't you snicker?
couldn't they snicker? 	couldn't I be snickering?
couldn't you be snickering?
couldn't he be snickering?
couldn't we be snickering?
couldn't you be snickering?
couldn't they be snickering? 	couldn't I have snickered?
couldn't you have snickered?
couldn't he have snickered?
couldn't we have snickered?
couldn't you have snickered?
couldn't they have snickered? 	couldn't I have been snickering?
couldn't you have been snickering?
couldn't he have been snickering?
couldn't we have been snickering?
couldn't you have been snickering?
couldn't they have been snickering?