could formulate
Verbo regular: formulate - formulated- formulated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could formulate
you could formulate
he could formulate
we could formulate
you could formulate
they could formulate 	I could be formulating
you could be formulating
he could be formulating
we could be formulating
you could be formulating
they could be formulating	I could have formulated
you could have formulated
he could have formulated
we could have formulated
you could have formulated
they could have formulated	I could have been formulating
you could have been formulating
he could have been formulating
we could have been formulating
you could have been formulating
they could have been formulating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not formulate
you could not formulate
he could not formulate
we could not formulate
you could not formulate
they could not formulate 	I could not be formulating
you could not be formulating
he could not be formulating
we could not be formulating
you could not be formulating
they could not be formulating	I could not have formulated
you could not have formulated
he could not have formulated
we could not have formulated
you could not have formulated
they could not have formulated	I could not have been formulating
you could not have been formulating
he could not have been formulating
we could not have been formulating
you could not have been formulating
they could not have been formulating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I formulate?
could you formulate?
could he formulate?
could we formulate?
could you formulate?
could they formulate? 	could I be formulating?
could you be formulating?
could he be formulating?
could we be formulating?
could you be formulating?
could they be formulating? 	could I have formulated?
could you have formulated?
could he have formulated?
could we have formulated?
could you have formulated?
could they have formulated? 	could I have been formulating?
could you have been formulating?
could he have been formulating?
could we have been formulating?
could you have been formulating?
could they have been formulating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not formulate?
could you not formulate?
could he not formulate?
could we not formulate?
could you not formulate?
could they not formulate? 	could I not be formulating?
could you not be formulating?
could he not be formulating?
could we not be formulating?
could you not be formulating?
could they not be formulating? 	could I not have formulated?
could you not have formulated?
could he not have formulated?
could we not have formulated?
could you not have formulated?
could they not have formulated? 	could I not have been formulating?
could you not have been formulating?
could he not have been formulating?
could we not have been formulating?
could you not have been formulating?
could they not have been formulating?