could fractionate
Verbo regular: fractionate - fractionated- fractionated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com 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	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not fractionate
you could not fractionate
he could not fractionate
we could not fractionate
you could not fractionate
they could not fractionate 	I could not be fractionating
you could not be fractionating
he could not be fractionating
we could not be fractionating
you could not be fractionating
they could not be fractionating	I could not have fractionated
you could not have fractionated
he could not have fractionated
we could not have fractionated
you could not have fractionated
they could not have fractionated	I could not have been fractionating
you could not have been fractionating
he could not have been fractionating
we could not have been fractionating
you could not have been fractionating
they could not have been fractionating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com 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? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not fractionate?
could you not fractionate?
could he not fractionate?
could we not fractionate?
could you not fractionate?
could they not fractionate? 	could I not be fractionating?
could you not be fractionating?
could he not be fractionating?
could we not be fractionating?
could you not be fractionating?
could they not be fractionating? 	could I not have fractionated?
could you not have fractionated?
could he not have fractionated?
could we not have fractionated?
could you not have fractionated?
could they not have fractionated? 	could I not have been fractionating?
could you not have been fractionating?
could he not have been fractionating?
could we not have been fractionating?
could you not have been fractionating?
could they not have been fractionating?