could worry
Verbo regular: worry - worried- worried

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could worry
you could worry
he could worry
we could worry
you could worry
they could worry 	I could be worrying
you could be worrying
he could be worrying
we could be worrying
you could be worrying
they could be worrying	I could have worried
you could have worried
he could have worried
we could have worried
you could have worried
they could have worried	I could have been worrying
you could have been worrying
he could have been worrying
we could have been worrying
you could have been worrying
they could have been worrying	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't worry
you couldn't worry
he couldn't worry
we couldn't worry
you couldn't worry
they couldn't worry 	I couldn't be worrying
you couldn't be worrying
he couldn't be worrying
we couldn't be worrying
you couldn't be worrying
they couldn't be worrying	I couldn't have worried
you couldn't have worried
he couldn't have worried
we couldn't have worried
you couldn't have worried
they couldn't have worried	I couldn't have been worrying
you couldn't have been worrying
he couldn't have been worrying
we couldn't have been worrying
you couldn't have been worrying
they couldn't have been worrying	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I worry?
could you worry?
could he worry?
could we worry?
could you worry?
could they worry? 	could I be worrying?
could you be worrying?
could he be worrying?
could we be worrying?
could you be worrying?
could they be worrying? 	could I have worried?
could you have worried?
could he have worried?
could we have worried?
could you have worried?
could they have worried? 	could I have been worrying?
could you have been worrying?
could he have been worrying?
could we have been worrying?
could you have been worrying?
could they have been worrying? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I worry?
couldn't you worry?
couldn't he worry?
couldn't we worry?
couldn't you worry?
couldn't they worry? 	couldn't I be worrying?
couldn't you be worrying?
couldn't he be worrying?
couldn't we be worrying?
couldn't you be worrying?
couldn't they be worrying? 	couldn't I have worried?
couldn't you have worried?
couldn't he have worried?
couldn't we have worried?
couldn't you have worried?
couldn't they have worried? 	couldn't I have been worrying?
couldn't you have been worrying?
couldn't he have been worrying?
couldn't we have been worrying?
couldn't you have been worrying?
couldn't they have been worrying?