can rolf
Verbo regular: rolf - rolfed- rolfed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can rolf
you can rolf
he can rolf
we can rolf
you can rolf
they can rolf 	I can be rolfing
you can be rolfing
he can be rolfing
we can be rolfing
you can be rolfing
they can be rolfing	I can have rolfed
you can have rolfed
he can have rolfed
we can have rolfed
you can have rolfed
they can have rolfed	I can have been rolfing
you can have been rolfing
he can have been rolfing
we can have been rolfing
you can have been rolfing
they can have been rolfing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can't rolf
you can't rolf
he can't rolf
we can't rolf
you can't rolf
they can't rolf 	I can't be rolfing
you can't be rolfing
he can't be rolfing
we can't be rolfing
you can't be rolfing
they can't be rolfing	I can't have rolfed
you can't have rolfed
he can't have rolfed
we can't have rolfed
you can't have rolfed
they can't have rolfed	I can't have been rolfing
you can't have been rolfing
he can't have been rolfing
we can't have been rolfing
you can't have been rolfing
they can't have been rolfing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I rolf?
can you rolf?
can he rolf?
can we rolf?
can you rolf?
can they rolf? 	can I be rolfing?
can you be rolfing?
can he be rolfing?
can we be rolfing?
can you be rolfing?
can they be rolfing? 	can I have rolfed?
can you have rolfed?
can he have rolfed?
can we have rolfed?
can you have rolfed?
can they have rolfed? 	can I have been rolfing?
can you have been rolfing?
can he have been rolfing?
can we have been rolfing?
can you have been rolfing?
can they have been rolfing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can't I rolf?
can't you rolf?
can't he rolf?
can't we rolf?
can't you rolf?
can't they rolf? 	can't I be rolfing?
can't you be rolfing?
can't he be rolfing?
can't we be rolfing?
can't you be rolfing?
can't they be rolfing? 	can't I have rolfed?
can't you have rolfed?
can't he have rolfed?
can't we have rolfed?
can't you have rolfed?
can't they have rolfed? 	can't I have been rolfing?
can't you have been rolfing?
can't he have been rolfing?
can't we have been rolfing?
can't you have been rolfing?
can't they have been rolfing?