could preformulate
Verbe régulier : preformulate - preformulated- preformulated

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could preformulate
you could preformulate
he could preformulate
we could preformulate
you could preformulate
they could preformulate 	I could be preformulating
you could be preformulating
he could be preformulating
we could be preformulating
you could be preformulating
they could be preformulating	I could have preformulated
you could have preformulated
he could have preformulated
we could have preformulated
you could have preformulated
they could have preformulated	I could have been preformulating
you could have been preformulating
he could have been preformulating
we could have been preformulating
you could have been preformulating
they could have been preformulating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not preformulate
you could not preformulate
he could not preformulate
we could not preformulate
you could not preformulate
they could not preformulate 	I could not be preformulating
you could not be preformulating
he could not be preformulating
we could not be preformulating
you could not be preformulating
they could not be preformulating	I could not have preformulated
you could not have preformulated
he could not have preformulated
we could not have preformulated
you could not have preformulated
they could not have preformulated	I could not have been preformulating
you could not have been preformulating
he could not have been preformulating
we could not have been preformulating
you could not have been preformulating
they could not have been preformulating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I preformulate?
could you preformulate?
could he preformulate?
could we preformulate?
could you preformulate?
could they preformulate? 	could I be preformulating?
could you be preformulating?
could he be preformulating?
could we be preformulating?
could you be preformulating?
could they be preformulating? 	could I have preformulated?
could you have preformulated?
could he have preformulated?
could we have preformulated?
could you have preformulated?
could they have preformulated? 	could I have been preformulating?
could you have been preformulating?
could he have been preformulating?
could we have been preformulating?
could you have been preformulating?
could they have been preformulating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not preformulate?
could you not preformulate?
could he not preformulate?
could we not preformulate?
could you not preformulate?
could they not preformulate? 	could I not be preformulating?
could you not be preformulating?
could he not be preformulating?
could we not be preformulating?
could you not be preformulating?
could they not be preformulating? 	could I not have preformulated?
could you not have preformulated?
could he not have preformulated?
could we not have preformulated?
could you not have preformulated?
could they not have preformulated? 	could I not have been preformulating?
could you not have been preformulating?
could he not have been preformulating?
could we not have been preformulating?
could you not have been preformulating?
could they not have been preformulating?