could luff
Verbo regular: luff - luffed- luffed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could luff
you could luff
she could luff
we could luff
you could luff
they could luff 	I could be luffing
you could be luffing
she could be luffing
we could be luffing
you could be luffing
they could be luffing	I could have luffed
you could have luffed
she could have luffed
we could have luffed
you could have luffed
they could have luffed	I could have been luffing
you could have been luffing
she could have been luffing
we could have been luffing
you could have been luffing
they could have been luffing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not luff
you could not luff
she could not luff
we could not luff
you could not luff
they could not luff 	I could not be luffing
you could not be luffing
she could not be luffing
we could not be luffing
you could not be luffing
they could not be luffing	I could not have luffed
you could not have luffed
she could not have luffed
we could not have luffed
you could not have luffed
they could not have luffed	I could not have been luffing
you could not have been luffing
she could not have been luffing
we could not have been luffing
you could not have been luffing
they could not have been luffing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I luff?
could you luff?
could she luff?
could we luff?
could you luff?
could they luff? 	could I be luffing?
could you be luffing?
could she be luffing?
could we be luffing?
could you be luffing?
could they be luffing? 	could I have luffed?
could you have luffed?
could she have luffed?
could we have luffed?
could you have luffed?
could they have luffed? 	could I have been luffing?
could you have been luffing?
could she have been luffing?
could we have been luffing?
could you have been luffing?
could they have been luffing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not luff?
could you not luff?
could she not luff?
could we not luff?
could you not luff?
could they not luff? 	could I not be luffing?
could you not be luffing?
could she not be luffing?
could we not be luffing?
could you not be luffing?
could they not be luffing? 	could I not have luffed?
could you not have luffed?
could she not have luffed?
could we not have luffed?
could you not have luffed?
could they not have luffed? 	could I not have been luffing?
could you not have been luffing?
could she not have been luffing?
could we not have been luffing?
could you not have been luffing?
could they not have been luffing?