could congregate
Verbo regular: congregate - congregated- congregated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could congregate
you could congregate
she could congregate
we could congregate
you could congregate
they could congregate 	I could be congregating
you could be congregating
she could be congregating
we could be congregating
you could be congregating
they could be congregating	I could have congregated
you could have congregated
she could have congregated
we could have congregated
you could have congregated
they could have congregated	I could have been congregating
you could have been congregating
she could have been congregating
we could have been congregating
you could have been congregating
they could have been congregating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't congregate
you couldn't congregate
she couldn't congregate
we couldn't congregate
you couldn't congregate
they couldn't congregate 	I couldn't be congregating
you couldn't be congregating
she couldn't be congregating
we couldn't be congregating
you couldn't be congregating
they couldn't be congregating	I couldn't have congregated
you couldn't have congregated
she couldn't have congregated
we couldn't have congregated
you couldn't have congregated
they couldn't have congregated	I couldn't have been congregating
you couldn't have been congregating
she couldn't have been congregating
we couldn't have been congregating
you couldn't have been congregating
they couldn't have been congregating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I congregate?
could you congregate?
could she congregate?
could we congregate?
could you congregate?
could they congregate? 	could I be congregating?
could you be congregating?
could she be congregating?
could we be congregating?
could you be congregating?
could they be congregating? 	could I have congregated?
could you have congregated?
could she have congregated?
could we have congregated?
could you have congregated?
could they have congregated? 	could I have been congregating?
could you have been congregating?
could she have been congregating?
could we have been congregating?
could you have been congregating?
could they have been congregating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I congregate?
couldn't you congregate?
couldn't she congregate?
couldn't we congregate?
couldn't you congregate?
couldn't they congregate? 	couldn't I be congregating?
couldn't you be congregating?
couldn't she be congregating?
couldn't we be congregating?
couldn't you be congregating?
couldn't they be congregating? 	couldn't I have congregated?
couldn't you have congregated?
couldn't she have congregated?
couldn't we have congregated?
couldn't you have congregated?
couldn't they have congregated? 	couldn't I have been congregating?
couldn't you have been congregating?
couldn't she have been congregating?
couldn't we have been congregating?
couldn't you have been congregating?
couldn't they have been congregating?