I could pierce you could pierce he could pierce we could pierce you could pierce they could pierce
Forme en V-ing
I could be piercing you could be piercing he could be piercing we could be piercing you could be piercing they could be piercing
Perfect
I could have pierced you could have pierced he could have pierced we could have pierced you could have pierced they could have pierced
Perfect en V-ing
I could have been piercing you could have been piercing he could have been piercing we could have been piercing you could have been piercing they could have been piercing
Négation
Forme simple
I could not pierce you could not pierce he could not pierce we could not pierce you could not pierce they could not pierce
Forme en V-ing
I could not be piercing you could not be piercing he could not be piercing we could not be piercing you could not be piercing they could not be piercing
Perfect
I could not have pierced you could not have pierced he could not have pierced we could not have pierced you could not have pierced they could not have pierced
Perfect en V-ing
I could not have been piercing you could not have been piercing he could not have been piercing we could not have been piercing you could not have been piercing they could not have been piercing
Forme interrogative
Forme simple
could I pierce? could you pierce? could he pierce? could we pierce? could you pierce? could they pierce?
Forme en V-ing
could I be piercing? could you be piercing? could he be piercing? could we be piercing? could you be piercing? could they be piercing?
Perfect
could I have pierced? could you have pierced? could he have pierced? could we have pierced? could you have pierced? could they have pierced?
Perfect en V-ing
could I have been piercing? could you have been piercing? could he have been piercing? could we have been piercing? could you have been piercing? could they have been piercing?
Forme interro-négative
Forme simple
could I not pierce? could you not pierce? could he not pierce? could we not pierce? could you not pierce? could they not pierce?
Forme en V-ing
could I not be piercing? could you not be piercing? could he not be piercing? could we not be piercing? could you not be piercing? could they not be piercing?
Perfect
could I not have pierced? could you not have pierced? could he not have pierced? could we not have pierced? could you not have pierced? could they not have pierced?
Perfect en V-ing
could I not have been piercing? could you not have been piercing? could he not have been piercing? could we not have been piercing? could you not have been piercing? could they not have been piercing?