I could sire you could sire she could sire we could sire you could sire they could sire
Forme en V-ing
I could be siring you could be siring she could be siring we could be siring you could be siring they could be siring
Perfect
I could have sired you could have sired she could have sired we could have sired you could have sired they could have sired
Perfect en V-ing
I could have been siring you could have been siring she could have been siring we could have been siring you could have been siring they could have been siring
Négation
Forme simple
I could not sire you could not sire she could not sire we could not sire you could not sire they could not sire
Forme en V-ing
I could not be siring you could not be siring she could not be siring we could not be siring you could not be siring they could not be siring
Perfect
I could not have sired you could not have sired she could not have sired we could not have sired you could not have sired they could not have sired
Perfect en V-ing
I could not have been siring you could not have been siring she could not have been siring we could not have been siring you could not have been siring they could not have been siring
Forme interrogative
Forme simple
could I sire? could you sire? could she sire? could we sire? could you sire? could they sire?
Forme en V-ing
could I be siring? could you be siring? could she be siring? could we be siring? could you be siring? could they be siring?
Perfect
could I have sired? could you have sired? could she have sired? could we have sired? could you have sired? could they have sired?
Perfect en V-ing
could I have been siring? could you have been siring? could she have been siring? could we have been siring? could you have been siring? could they have been siring?
Forme interro-négative
Forme simple
could I not sire? could you not sire? could she not sire? could we not sire? could you not sire? could they not sire?
Forme en V-ing
could I not be siring? could you not be siring? could she not be siring? could we not be siring? could you not be siring? could they not be siring?
Perfect
could I not have sired? could you not have sired? could she not have sired? could we not have sired? could you not have sired? could they not have sired?
Perfect en V-ing
could I not have been siring? could you not have been siring? could she not have been siring? could we not have been siring? could you not have been siring? could they not have been siring?