could mason
Verbe régulier : mason - masoned- masoned

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could mason
you could mason
he could mason
we could mason
you could mason
they could mason 	I could be masoning
you could be masoning
he could be masoning
we could be masoning
you could be masoning
they could be masoning	I could have masoned
you could have masoned
he could have masoned
we could have masoned
you could have masoned
they could have masoned	I could have been masoning
you could have been masoning
he could have been masoning
we could have been masoning
you could have been masoning
they could have been masoning	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not mason
you could not mason
he could not mason
we could not mason
you could not mason
they could not mason 	I could not be masoning
you could not be masoning
he could not be masoning
we could not be masoning
you could not be masoning
they could not be masoning	I could not have masoned
you could not have masoned
he could not have masoned
we could not have masoned
you could not have masoned
they could not have masoned	I could not have been masoning
you could not have been masoning
he could not have been masoning
we could not have been masoning
you could not have been masoning
they could not have been masoning	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I mason?
could you mason?
could he mason?
could we mason?
could you mason?
could they mason? 	could I be masoning?
could you be masoning?
could he be masoning?
could we be masoning?
could you be masoning?
could they be masoning? 	could I have masoned?
could you have masoned?
could he have masoned?
could we have masoned?
could you have masoned?
could they have masoned? 	could I have been masoning?
could you have been masoning?
could he have been masoning?
could we have been masoning?
could you have been masoning?
could they have been masoning? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not mason?
could you not mason?
could he not mason?
could we not mason?
could you not mason?
could they not mason? 	could I not be masoning?
could you not be masoning?
could he not be masoning?
could we not be masoning?
could you not be masoning?
could they not be masoning? 	could I not have masoned?
could you not have masoned?
could he not have masoned?
could we not have masoned?
could you not have masoned?
could they not have masoned? 	could I not have been masoning?
could you not have been masoning?
could he not have been masoning?
could we not have been masoning?
could you not have been masoning?
could they not have been masoning?