could congregate
Verbo regular: congregate - congregated- congregated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com 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	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not congregate
you could not congregate
she could not congregate
we could not congregate
you could not congregate
they could not congregate 	I could not be congregating
you could not be congregating
she could not be congregating
we could not be congregating
you could not be congregating
they could not be congregating	I could not have congregated
you could not have congregated
she could not have congregated
we could not have congregated
you could not have congregated
they could not have congregated	I could not have been congregating
you could not have been congregating
she could not have been congregating
we could not have been congregating
you could not have been congregating
they could not have been congregating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com 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-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not congregate?
could you not congregate?
could she not congregate?
could we not congregate?
could you not congregate?
could they not congregate? 	could I not be congregating?
could you not be congregating?
could she not be congregating?
could we not be congregating?
could you not be congregating?
could they not be congregating? 	could I not have congregated?
could you not have congregated?
could she not have congregated?
could we not have congregated?
could you not have congregated?
could they not have congregated? 	could I not have been congregating?
could you not have been congregating?
could she not have been congregating?
could we not have been congregating?
could you not have been congregating?
could they not have been congregating?