I could crackle you could crackle he could crackle we could crackle you could crackle they could crackle
Forme en V-ing
I could be crackling you could be crackling he could be crackling we could be crackling you could be crackling they could be crackling
Perfect
I could have crackled you could have crackled he could have crackled we could have crackled you could have crackled they could have crackled
Perfect en V-ing
I could have been crackling you could have been crackling he could have been crackling we could have been crackling you could have been crackling they could have been crackling
Négation
Forme simple
I could not crackle you could not crackle he could not crackle we could not crackle you could not crackle they could not crackle
Forme en V-ing
I could not be crackling you could not be crackling he could not be crackling we could not be crackling you could not be crackling they could not be crackling
Perfect
I could not have crackled you could not have crackled he could not have crackled we could not have crackled you could not have crackled they could not have crackled
Perfect en V-ing
I could not have been crackling you could not have been crackling he could not have been crackling we could not have been crackling you could not have been crackling they could not have been crackling
Forme interrogative
Forme simple
could I crackle? could you crackle? could he crackle? could we crackle? could you crackle? could they crackle?
Forme en V-ing
could I be crackling? could you be crackling? could he be crackling? could we be crackling? could you be crackling? could they be crackling?
Perfect
could I have crackled? could you have crackled? could he have crackled? could we have crackled? could you have crackled? could they have crackled?
Perfect en V-ing
could I have been crackling? could you have been crackling? could he have been crackling? could we have been crackling? could you have been crackling? could they have been crackling?
Forme interro-négative
Forme simple
could I not crackle? could you not crackle? could he not crackle? could we not crackle? could you not crackle? could they not crackle?
Forme en V-ing
could I not be crackling? could you not be crackling? could he not be crackling? could we not be crackling? could you not be crackling? could they not be crackling?
Perfect
could I not have crackled? could you not have crackled? could he not have crackled? could we not have crackled? could you not have crackled? could they not have crackled?
Perfect en V-ing
could I not have been crackling? could you not have been crackling? could he not have been crackling? could we not have been crackling? could you not have been crackling? could they not have been crackling?