can nod
Verbo regular: nod - nodded- nodded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can nod
you can nod
he can nod
we can nod
you can nod
they can nod 	I can be nodding
you can be nodding
he can be nodding
we can be nodding
you can be nodding
they can be nodding	I can have nodded
you can have nodded
he can have nodded
we can have nodded
you can have nodded
they can have nodded	I can have been nodding
you can have been nodding
he can have been nodding
we can have been nodding
you can have been nodding
they can have been nodding	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can't nod
you can't nod
he can't nod
we can't nod
you can't nod
they can't nod 	I can't be nodding
you can't be nodding
he can't be nodding
we can't be nodding
you can't be nodding
they can't be nodding	I can't have nodded
you can't have nodded
he can't have nodded
we can't have nodded
you can't have nodded
they can't have nodded	I can't have been nodding
you can't have been nodding
he can't have been nodding
we can't have been nodding
you can't have been nodding
they can't have been nodding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I nod?
can you nod?
can he nod?
can we nod?
can you nod?
can they nod? 	can I be nodding?
can you be nodding?
can he be nodding?
can we be nodding?
can you be nodding?
can they be nodding? 	can I have nodded?
can you have nodded?
can he have nodded?
can we have nodded?
can you have nodded?
can they have nodded? 	can I have been nodding?
can you have been nodding?
can he have been nodding?
can we have been nodding?
can you have been nodding?
can they have been nodding? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can't I nod?
can't you nod?
can't he nod?
can't we nod?
can't you nod?
can't they nod? 	can't I be nodding?
can't you be nodding?
can't he be nodding?
can't we be nodding?
can't you be nodding?
can't they be nodding? 	can't I have nodded?
can't you have nodded?
can't he have nodded?
can't we have nodded?
can't you have nodded?
can't they have nodded? 	can't I have been nodding?
can't you have been nodding?
can't he have been nodding?
can't we have been nodding?
can't you have been nodding?
can't they have been nodding?