I could crackle you could crackle he could crackle we could crackle you could crackle they could crackle
Forma con 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
Perfecto
I could have crackled you could have crackled he could have crackled we could have crackled you could have crackled they could have crackled
Perfecto con 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
Negación
Forma 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
Forma con 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
Perfecto
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
Perfecto con 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
Forma interrogativa
Forma simple
could I crackle? could you crackle? could he crackle? could we crackle? could you crackle? could they crackle?
Forma con 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?
Perfecto
could I have crackled? could you have crackled? could he have crackled? could we have crackled? could you have crackled? could they have crackled?
Perfecto con 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?
Forma interro-negativa
Forma 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?
Forma con 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?
Perfecto
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?
Perfecto con 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?