could experiment
Verbo regular: experiment - experimented- experimented

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could experiment
you could experiment
he could experiment
we could experiment
you could experiment
they could experiment 	I could be experimenting
you could be experimenting
he could be experimenting
we could be experimenting
you could be experimenting
they could be experimenting	I could have experimented
you could have experimented
he could have experimented
we could have experimented
you could have experimented
they could have experimented	I could have been experimenting
you could have been experimenting
he could have been experimenting
we could have been experimenting
you could have been experimenting
they could have been experimenting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not experiment
you could not experiment
he could not experiment
we could not experiment
you could not experiment
they could not experiment 	I could not be experimenting
you could not be experimenting
he could not be experimenting
we could not be experimenting
you could not be experimenting
they could not be experimenting	I could not have experimented
you could not have experimented
he could not have experimented
we could not have experimented
you could not have experimented
they could not have experimented	I could not have been experimenting
you could not have been experimenting
he could not have been experimenting
we could not have been experimenting
you could not have been experimenting
they could not have been experimenting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I experiment?
could you experiment?
could he experiment?
could we experiment?
could you experiment?
could they experiment? 	could I be experimenting?
could you be experimenting?
could he be experimenting?
could we be experimenting?
could you be experimenting?
could they be experimenting? 	could I have experimented?
could you have experimented?
could he have experimented?
could we have experimented?
could you have experimented?
could they have experimented? 	could I have been experimenting?
could you have been experimenting?
could he have been experimenting?
could we have been experimenting?
could you have been experimenting?
could they have been experimenting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not experiment?
could you not experiment?
could he not experiment?
could we not experiment?
could you not experiment?
could they not experiment? 	could I not be experimenting?
could you not be experimenting?
could he not be experimenting?
could we not be experimenting?
could you not be experimenting?
could they not be experimenting? 	could I not have experimented?
could you not have experimented?
could he not have experimented?
could we not have experimented?
could you not have experimented?
could they not have experimented? 	could I not have been experimenting?
could you not have been experimenting?
could he not have been experimenting?
could we not have been experimenting?
could you not have been experimenting?
could they not have been experimenting?