can grin
Verbo regular: grin - grinned- grinned

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can grin
you can grin
he can grin
we can grin
you can grin
they can grin 	I can be grinning
you can be grinning
he can be grinning
we can be grinning
you can be grinning
they can be grinning	I can have grinned
you can have grinned
he can have grinned
we can have grinned
you can have grinned
they can have grinned	I can have been grinning
you can have been grinning
he can have been grinning
we can have been grinning
you can have been grinning
they can have been grinning	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot grin
you cannot grin
he cannot grin
we cannot grin
you cannot grin
they cannot grin 	I cannot be grinning
you cannot be grinning
he cannot be grinning
we cannot be grinning
you cannot be grinning
they cannot be grinning	I cannot have grinned
you cannot have grinned
he cannot have grinned
we cannot have grinned
you cannot have grinned
they cannot have grinned	I cannot have been grinning
you cannot have been grinning
he cannot have been grinning
we cannot have been grinning
you cannot have been grinning
they cannot have been grinning	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I grin?
can you grin?
can he grin?
can we grin?
can you grin?
can they grin? 	can I be grinning?
can you be grinning?
can he be grinning?
can we be grinning?
can you be grinning?
can they be grinning? 	can I have grinned?
can you have grinned?
can he have grinned?
can we have grinned?
can you have grinned?
can they have grinned? 	can I have been grinning?
can you have been grinning?
can he have been grinning?
can we have been grinning?
can you have been grinning?
can they have been grinning? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not grin?
can you not grin?
can he not grin?
can we not grin?
can you not grin?
can they not grin? 	can I not be grinning?
can you not be grinning?
can he not be grinning?
can we not be grinning?
can you not be grinning?
can they not be grinning? 	can I not have grinned?
can you not have grinned?
can he not have grinned?
can we not have grinned?
can you not have grinned?
can they not have grinned? 	can I not have been grinning?
can you not have been grinning?
can he not have been grinning?
can we not have been grinning?
can you not have been grinning?
can they not have been grinning?