could buy
Verbo irregular: buy - bought- bought

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could buy
you could buy
she could buy
we could buy
you could buy
they could buy 	I could be buying
you could be buying
she could be buying
we could be buying
you could be buying
they could be buying	I could have bought
you could have bought
she could have bought
we could have bought
you could have bought
they could have bought	I could have been buying
you could have been buying
she could have been buying
we could have been buying
you could have been buying
they could have been buying	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't buy
you couldn't buy
she couldn't buy
we couldn't buy
you couldn't buy
they couldn't buy 	I couldn't be buying
you couldn't be buying
she couldn't be buying
we couldn't be buying
you couldn't be buying
they couldn't be buying	I couldn't have bought
you couldn't have bought
she couldn't have bought
we couldn't have bought
you couldn't have bought
they couldn't have bought	I couldn't have been buying
you couldn't have been buying
she couldn't have been buying
we couldn't have been buying
you couldn't have been buying
they couldn't have been buying	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I buy?
could you buy?
could she buy?
could we buy?
could you buy?
could they buy? 	could I be buying?
could you be buying?
could she be buying?
could we be buying?
could you be buying?
could they be buying? 	could I have bought?
could you have bought?
could she have bought?
could we have bought?
could you have bought?
could they have bought? 	could I have been buying?
could you have been buying?
could she have been buying?
could we have been buying?
could you have been buying?
could they have been buying? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I buy?
couldn't you buy?
couldn't she buy?
couldn't we buy?
couldn't you buy?
couldn't they buy? 	couldn't I be buying?
couldn't you be buying?
couldn't she be buying?
couldn't we be buying?
couldn't you be buying?
couldn't they be buying? 	couldn't I have bought?
couldn't you have bought?
couldn't she have bought?
couldn't we have bought?
couldn't you have bought?
couldn't they have bought? 	couldn't I have been buying?
couldn't you have been buying?
couldn't she have been buying?
couldn't we have been buying?
couldn't you have been buying?
couldn't they have been buying?