can quadruple
Verbo regular: quadruple - quadrupled- quadrupled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can quadruple
you can quadruple
he can quadruple
we can quadruple
you can quadruple
they can quadruple 	I can be quadrupling
you can be quadrupling
he can be quadrupling
we can be quadrupling
you can be quadrupling
they can be quadrupling	I can have quadrupled
you can have quadrupled
he can have quadrupled
we can have quadrupled
you can have quadrupled
they can have quadrupled	I can have been quadrupling
you can have been quadrupling
he can have been quadrupling
we can have been quadrupling
you can have been quadrupling
they can have been quadrupling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot quadruple
you cannot quadruple
he cannot quadruple
we cannot quadruple
you cannot quadruple
they cannot quadruple 	I cannot be quadrupling
you cannot be quadrupling
he cannot be quadrupling
we cannot be quadrupling
you cannot be quadrupling
they cannot be quadrupling	I cannot have quadrupled
you cannot have quadrupled
he cannot have quadrupled
we cannot have quadrupled
you cannot have quadrupled
they cannot have quadrupled	I cannot have been quadrupling
you cannot have been quadrupling
he cannot have been quadrupling
we cannot have been quadrupling
you cannot have been quadrupling
they cannot have been quadrupling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I quadruple?
can you quadruple?
can he quadruple?
can we quadruple?
can you quadruple?
can they quadruple? 	can I be quadrupling?
can you be quadrupling?
can he be quadrupling?
can we be quadrupling?
can you be quadrupling?
can they be quadrupling? 	can I have quadrupled?
can you have quadrupled?
can he have quadrupled?
can we have quadrupled?
can you have quadrupled?
can they have quadrupled? 	can I have been quadrupling?
can you have been quadrupling?
can he have been quadrupling?
can we have been quadrupling?
can you have been quadrupling?
can they have been quadrupling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not quadruple?
can you not quadruple?
can he not quadruple?
can we not quadruple?
can you not quadruple?
can they not quadruple? 	can I not be quadrupling?
can you not be quadrupling?
can he not be quadrupling?
can we not be quadrupling?
can you not be quadrupling?
can they not be quadrupling? 	can I not have quadrupled?
can you not have quadrupled?
can he not have quadrupled?
can we not have quadrupled?
can you not have quadrupled?
can they not have quadrupled? 	can I not have been quadrupling?
can you not have been quadrupling?
can he not have been quadrupling?
can we not have been quadrupling?
can you not have been quadrupling?
can they not have been quadrupling?