can ruff
Verbo regolare: ruff - ruffed- ruffed

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I can ruff
you can ruff
she can ruff
we can ruff
you can ruff
they can ruff 	I can be ruffing
you can be ruffing
she can be ruffing
we can be ruffing
you can be ruffing
they can be ruffing	I can have ruffed
you can have ruffed
she can have ruffed
we can have ruffed
you can have ruffed
they can have ruffed	I can have been ruffing
you can have been ruffing
she can have been ruffing
we can have been ruffing
you can have been ruffing
they can have been ruffing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I cannot ruff
you cannot ruff
she cannot ruff
we cannot ruff
you cannot ruff
they cannot ruff 	I cannot be ruffing
you cannot be ruffing
she cannot be ruffing
we cannot be ruffing
you cannot be ruffing
they cannot be ruffing	I cannot have ruffed
you cannot have ruffed
she cannot have ruffed
we cannot have ruffed
you cannot have ruffed
they cannot have ruffed	I cannot have been ruffing
you cannot have been ruffing
she cannot have been ruffing
we cannot have been ruffing
you cannot have been ruffing
they cannot have been ruffing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
can I ruff?
can you ruff?
can she ruff?
can we ruff?
can you ruff?
can they ruff? 	can I be ruffing?
can you be ruffing?
can she be ruffing?
can we be ruffing?
can you be ruffing?
can they be ruffing? 	can I have ruffed?
can you have ruffed?
can she have ruffed?
can we have ruffed?
can you have ruffed?
can they have ruffed? 	can I have been ruffing?
can you have been ruffing?
can she have been ruffing?
can we have been ruffing?
can you have been ruffing?
can they have been ruffing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
can I not ruff?
can you not ruff?
can she not ruff?
can we not ruff?
can you not ruff?
can they not ruff? 	can I not be ruffing?
can you not be ruffing?
can she not be ruffing?
can we not be ruffing?
can you not be ruffing?
can they not be ruffing? 	can I not have ruffed?
can you not have ruffed?
can she not have ruffed?
can we not have ruffed?
can you not have ruffed?
can they not have ruffed? 	can I not have been ruffing?
can you not have been ruffing?
can she not have been ruffing?
can we not have been ruffing?
can you not have been ruffing?
can they not have been ruffing?