could restrengthen
Verbo regular: restrengthen - restrengthened- restrengthened

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could restrengthen
you could restrengthen
he could restrengthen
we could restrengthen
you could restrengthen
they could restrengthen 	I could be restrengthening
you could be restrengthening
he could be restrengthening
we could be restrengthening
you could be restrengthening
they could be restrengthening	I could have restrengthened
you could have restrengthened
he could have restrengthened
we could have restrengthened
you could have restrengthened
they could have restrengthened	I could have been restrengthening
you could have been restrengthening
he could have been restrengthening
we could have been restrengthening
you could have been restrengthening
they could have been restrengthening	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not restrengthen
you could not restrengthen
he could not restrengthen
we could not restrengthen
you could not restrengthen
they could not restrengthen 	I could not be restrengthening
you could not be restrengthening
he could not be restrengthening
we could not be restrengthening
you could not be restrengthening
they could not be restrengthening	I could not have restrengthened
you could not have restrengthened
he could not have restrengthened
we could not have restrengthened
you could not have restrengthened
they could not have restrengthened	I could not have been restrengthening
you could not have been restrengthening
he could not have been restrengthening
we could not have been restrengthening
you could not have been restrengthening
they could not have been restrengthening	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I restrengthen?
could you restrengthen?
could he restrengthen?
could we restrengthen?
could you restrengthen?
could they restrengthen? 	could I be restrengthening?
could you be restrengthening?
could he be restrengthening?
could we be restrengthening?
could you be restrengthening?
could they be restrengthening? 	could I have restrengthened?
could you have restrengthened?
could he have restrengthened?
could we have restrengthened?
could you have restrengthened?
could they have restrengthened? 	could I have been restrengthening?
could you have been restrengthening?
could he have been restrengthening?
could we have been restrengthening?
could you have been restrengthening?
could they have been restrengthening? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not restrengthen?
could you not restrengthen?
could he not restrengthen?
could we not restrengthen?
could you not restrengthen?
could they not restrengthen? 	could I not be restrengthening?
could you not be restrengthening?
could he not be restrengthening?
could we not be restrengthening?
could you not be restrengthening?
could they not be restrengthening? 	could I not have restrengthened?
could you not have restrengthened?
could he not have restrengthened?
could we not have restrengthened?
could you not have restrengthened?
could they not have restrengthened? 	could I not have been restrengthening?
could you not have been restrengthening?
could he not have been restrengthening?
could we not have been restrengthening?
could you not have been restrengthening?
could they not have been restrengthening?