could scintillate
Verbo regular: scintillate - scintillated- scintillated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could scintillate
you could scintillate
he could scintillate
we could scintillate
you could scintillate
they could scintillate 	I could be scintillating
you could be scintillating
he could be scintillating
we could be scintillating
you could be scintillating
they could be scintillating	I could have scintillated
you could have scintillated
he could have scintillated
we could have scintillated
you could have scintillated
they could have scintillated	I could have been scintillating
you could have been scintillating
he could have been scintillating
we could have been scintillating
you could have been scintillating
they could have been scintillating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't scintillate
you couldn't scintillate
he couldn't scintillate
we couldn't scintillate
you couldn't scintillate
they couldn't scintillate 	I couldn't be scintillating
you couldn't be scintillating
he couldn't be scintillating
we couldn't be scintillating
you couldn't be scintillating
they couldn't be scintillating	I couldn't have scintillated
you couldn't have scintillated
he couldn't have scintillated
we couldn't have scintillated
you couldn't have scintillated
they couldn't have scintillated	I couldn't have been scintillating
you couldn't have been scintillating
he couldn't have been scintillating
we couldn't have been scintillating
you couldn't have been scintillating
they couldn't have been scintillating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I scintillate?
could you scintillate?
could he scintillate?
could we scintillate?
could you scintillate?
could they scintillate? 	could I be scintillating?
could you be scintillating?
could he be scintillating?
could we be scintillating?
could you be scintillating?
could they be scintillating? 	could I have scintillated?
could you have scintillated?
could he have scintillated?
could we have scintillated?
could you have scintillated?
could they have scintillated? 	could I have been scintillating?
could you have been scintillating?
could he have been scintillating?
could we have been scintillating?
could you have been scintillating?
could they have been scintillating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I scintillate?
couldn't you scintillate?
couldn't he scintillate?
couldn't we scintillate?
couldn't you scintillate?
couldn't they scintillate? 	couldn't I be scintillating?
couldn't you be scintillating?
couldn't he be scintillating?
couldn't we be scintillating?
couldn't you be scintillating?
couldn't they be scintillating? 	couldn't I have scintillated?
couldn't you have scintillated?
couldn't he have scintillated?
couldn't we have scintillated?
couldn't you have scintillated?
couldn't they have scintillated? 	couldn't I have been scintillating?
couldn't you have been scintillating?
couldn't he have been scintillating?
couldn't we have been scintillating?
couldn't you have been scintillating?
couldn't they have been scintillating?