could quadruple
Verbe régulier : quadruple - quadrupled- quadrupled
Traduction française : quadrupler - quadrupler 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could quadruple
you could quadruple
he could quadruple
we could quadruple
you could quadruple
they could quadruple 	I could be quadrupling
you could be quadrupling
he could be quadrupling
we could be quadrupling
you could be quadrupling
they could be quadrupling	I could have quadrupled
you could have quadrupled
he could have quadrupled
we could have quadrupled
you could have quadrupled
they could have quadrupled	I could have been quadrupling
you could have been quadrupling
he could have been quadrupling
we could have been quadrupling
you could have been quadrupling
they could have been quadrupling	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't quadruple
you couldn't quadruple
he couldn't quadruple
we couldn't quadruple
you couldn't quadruple
they couldn't quadruple 	I couldn't be quadrupling
you couldn't be quadrupling
he couldn't be quadrupling
we couldn't be quadrupling
you couldn't be quadrupling
they couldn't be quadrupling	I couldn't have quadrupled
you couldn't have quadrupled
he couldn't have quadrupled
we couldn't have quadrupled
you couldn't have quadrupled
they couldn't have quadrupled	I couldn't have been quadrupling
you couldn't have been quadrupling
he couldn't have been quadrupling
we couldn't have been quadrupling
you couldn't have been quadrupling
they couldn't have been quadrupling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I quadruple?
could you quadruple?
could he quadruple?
could we quadruple?
could you quadruple?
could they quadruple? 	could I be quadrupling?
could you be quadrupling?
could he be quadrupling?
could we be quadrupling?
could you be quadrupling?
could they be quadrupling? 	could I have quadrupled?
could you have quadrupled?
could he have quadrupled?
could we have quadrupled?
could you have quadrupled?
could they have quadrupled? 	could I have been quadrupling?
could you have been quadrupling?
could he have been quadrupling?
could we have been quadrupling?
could you have been quadrupling?
could they have been quadrupling? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I quadruple?
couldn't you quadruple?
couldn't he quadruple?
couldn't we quadruple?
couldn't you quadruple?
couldn't they quadruple? 	couldn't I be quadrupling?
couldn't you be quadrupling?
couldn't he be quadrupling?
couldn't we be quadrupling?
couldn't you be quadrupling?
couldn't they be quadrupling? 	couldn't I have quadrupled?
couldn't you have quadrupled?
couldn't he have quadrupled?
couldn't we have quadrupled?
couldn't you have quadrupled?
couldn't they have quadrupled? 	couldn't I have been quadrupling?
couldn't you have been quadrupling?
couldn't he have been quadrupling?
couldn't we have been quadrupling?
couldn't you have been quadrupling?
couldn't they have been quadrupling?