could pursue
Verbo regular: pursue - pursued- pursued

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could pursue
you could pursue
she could pursue
we could pursue
you could pursue
they could pursue 	I could be pursuing
you could be pursuing
she could be pursuing
we could be pursuing
you could be pursuing
they could be pursuing	I could have pursued
you could have pursued
she could have pursued
we could have pursued
you could have pursued
they could have pursued	I could have been pursuing
you could have been pursuing
she could have been pursuing
we could have been pursuing
you could have been pursuing
they could have been pursuing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't pursue
you couldn't pursue
she couldn't pursue
we couldn't pursue
you couldn't pursue
they couldn't pursue 	I couldn't be pursuing
you couldn't be pursuing
she couldn't be pursuing
we couldn't be pursuing
you couldn't be pursuing
they couldn't be pursuing	I couldn't have pursued
you couldn't have pursued
she couldn't have pursued
we couldn't have pursued
you couldn't have pursued
they couldn't have pursued	I couldn't have been pursuing
you couldn't have been pursuing
she couldn't have been pursuing
we couldn't have been pursuing
you couldn't have been pursuing
they couldn't have been pursuing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I pursue?
could you pursue?
could she pursue?
could we pursue?
could you pursue?
could they pursue? 	could I be pursuing?
could you be pursuing?
could she be pursuing?
could we be pursuing?
could you be pursuing?
could they be pursuing? 	could I have pursued?
could you have pursued?
could she have pursued?
could we have pursued?
could you have pursued?
could they have pursued? 	could I have been pursuing?
could you have been pursuing?
could she have been pursuing?
could we have been pursuing?
could you have been pursuing?
could they have been pursuing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I pursue?
couldn't you pursue?
couldn't she pursue?
couldn't we pursue?
couldn't you pursue?
couldn't they pursue? 	couldn't I be pursuing?
couldn't you be pursuing?
couldn't she be pursuing?
couldn't we be pursuing?
couldn't you be pursuing?
couldn't they be pursuing? 	couldn't I have pursued?
couldn't you have pursued?
couldn't she have pursued?
couldn't we have pursued?
couldn't you have pursued?
couldn't they have pursued? 	couldn't I have been pursuing?
couldn't you have been pursuing?
couldn't she have been pursuing?
couldn't we have been pursuing?
couldn't you have been pursuing?
couldn't they have been pursuing?