could fractionate
Verbe régulier : fractionate - fractionated- fractionated

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could fractionate
you could fractionate
he could fractionate
we could fractionate
you could fractionate
they could fractionate 	I could be fractionating
you could be fractionating
he could be fractionating
we could be fractionating
you could be fractionating
they could be fractionating	I could have fractionated
you could have fractionated
he could have fractionated
we could have fractionated
you could have fractionated
they could have fractionated	I could have been fractionating
you could have been fractionating
he could have been fractionating
we could have been fractionating
you could have been fractionating
they could have been fractionating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't fractionate
you couldn't fractionate
he couldn't fractionate
we couldn't fractionate
you couldn't fractionate
they couldn't fractionate 	I couldn't be fractionating
you couldn't be fractionating
he couldn't be fractionating
we couldn't be fractionating
you couldn't be fractionating
they couldn't be fractionating	I couldn't have fractionated
you couldn't have fractionated
he couldn't have fractionated
we couldn't have fractionated
you couldn't have fractionated
they couldn't have fractionated	I couldn't have been fractionating
you couldn't have been fractionating
he couldn't have been fractionating
we couldn't have been fractionating
you couldn't have been fractionating
they couldn't have been fractionating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I fractionate?
could you fractionate?
could he fractionate?
could we fractionate?
could you fractionate?
could they fractionate? 	could I be fractionating?
could you be fractionating?
could he be fractionating?
could we be fractionating?
could you be fractionating?
could they be fractionating? 	could I have fractionated?
could you have fractionated?
could he have fractionated?
could we have fractionated?
could you have fractionated?
could they have fractionated? 	could I have been fractionating?
could you have been fractionating?
could he have been fractionating?
could we have been fractionating?
could you have been fractionating?
could they have been fractionating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I fractionate?
couldn't you fractionate?
couldn't he fractionate?
couldn't we fractionate?
couldn't you fractionate?
couldn't they fractionate? 	couldn't I be fractionating?
couldn't you be fractionating?
couldn't he be fractionating?
couldn't we be fractionating?
couldn't you be fractionating?
couldn't they be fractionating? 	couldn't I have fractionated?
couldn't you have fractionated?
couldn't he have fractionated?
couldn't we have fractionated?
couldn't you have fractionated?
couldn't they have fractionated? 	couldn't I have been fractionating?
couldn't you have been fractionating?
couldn't he have been fractionating?
couldn't we have been fractionating?
couldn't you have been fractionating?
couldn't they have been fractionating?