could spacewalk
Verbe régulier : spacewalk - spacewalked- spacewalked

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could spacewalk
you could spacewalk
he could spacewalk
we could spacewalk
you could spacewalk
they could spacewalk 	I could be spacewalking
you could be spacewalking
he could be spacewalking
we could be spacewalking
you could be spacewalking
they could be spacewalking	I could have spacewalked
you could have spacewalked
he could have spacewalked
we could have spacewalked
you could have spacewalked
they could have spacewalked	I could have been spacewalking
you could have been spacewalking
he could have been spacewalking
we could have been spacewalking
you could have been spacewalking
they could have been spacewalking	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not spacewalk
you could not spacewalk
he could not spacewalk
we could not spacewalk
you could not spacewalk
they could not spacewalk 	I could not be spacewalking
you could not be spacewalking
he could not be spacewalking
we could not be spacewalking
you could not be spacewalking
they could not be spacewalking	I could not have spacewalked
you could not have spacewalked
he could not have spacewalked
we could not have spacewalked
you could not have spacewalked
they could not have spacewalked	I could not have been spacewalking
you could not have been spacewalking
he could not have been spacewalking
we could not have been spacewalking
you could not have been spacewalking
they could not have been spacewalking	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I spacewalk?
could you spacewalk?
could he spacewalk?
could we spacewalk?
could you spacewalk?
could they spacewalk? 	could I be spacewalking?
could you be spacewalking?
could he be spacewalking?
could we be spacewalking?
could you be spacewalking?
could they be spacewalking? 	could I have spacewalked?
could you have spacewalked?
could he have spacewalked?
could we have spacewalked?
could you have spacewalked?
could they have spacewalked? 	could I have been spacewalking?
could you have been spacewalking?
could he have been spacewalking?
could we have been spacewalking?
could you have been spacewalking?
could they have been spacewalking? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not spacewalk?
could you not spacewalk?
could he not spacewalk?
could we not spacewalk?
could you not spacewalk?
could they not spacewalk? 	could I not be spacewalking?
could you not be spacewalking?
could he not be spacewalking?
could we not be spacewalking?
could you not be spacewalking?
could they not be spacewalking? 	could I not have spacewalked?
could you not have spacewalked?
could he not have spacewalked?
could we not have spacewalked?
could you not have spacewalked?
could they not have spacewalked? 	could I not have been spacewalking?
could you not have been spacewalking?
could he not have been spacewalking?
could we not have been spacewalking?
could you not have been spacewalking?
could they not have been spacewalking?