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