could interfold
Verbo regular: interfold - interfolded- interfolded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could interfold
you could interfold
he could interfold
we could interfold
you could interfold
they could interfold 	I could be interfolding
you could be interfolding
he could be interfolding
we could be interfolding
you could be interfolding
they could be interfolding	I could have interfolded
you could have interfolded
he could have interfolded
we could have interfolded
you could have interfolded
they could have interfolded	I could have been interfolding
you could have been interfolding
he could have been interfolding
we could have been interfolding
you could have been interfolding
they could have been interfolding	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not interfold
you could not interfold
he could not interfold
we could not interfold
you could not interfold
they could not interfold 	I could not be interfolding
you could not be interfolding
he could not be interfolding
we could not be interfolding
you could not be interfolding
they could not be interfolding	I could not have interfolded
you could not have interfolded
he could not have interfolded
we could not have interfolded
you could not have interfolded
they could not have interfolded	I could not have been interfolding
you could not have been interfolding
he could not have been interfolding
we could not have been interfolding
you could not have been interfolding
they could not have been interfolding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I interfold?
could you interfold?
could he interfold?
could we interfold?
could you interfold?
could they interfold? 	could I be interfolding?
could you be interfolding?
could he be interfolding?
could we be interfolding?
could you be interfolding?
could they be interfolding? 	could I have interfolded?
could you have interfolded?
could he have interfolded?
could we have interfolded?
could you have interfolded?
could they have interfolded? 	could I have been interfolding?
could you have been interfolding?
could he have been interfolding?
could we have been interfolding?
could you have been interfolding?
could they have been interfolding? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not interfold?
could you not interfold?
could he not interfold?
could we not interfold?
could you not interfold?
could they not interfold? 	could I not be interfolding?
could you not be interfolding?
could he not be interfolding?
could we not be interfolding?
could you not be interfolding?
could they not be interfolding? 	could I not have interfolded?
could you not have interfolded?
could he not have interfolded?
could we not have interfolded?
could you not have interfolded?
could they not have interfolded? 	could I not have been interfolding?
could you not have been interfolding?
could he not have been interfolding?
could we not have been interfolding?
could you not have been interfolding?
could they not have been interfolding?