I could suckle you could suckle she could suckle we could suckle you could suckle they could suckle
Forma con V-ing
I could be suckling you could be suckling she could be suckling we could be suckling you could be suckling they could be suckling
Perfecto
I could have suckled you could have suckled she could have suckled we could have suckled you could have suckled they could have suckled
Perfecto con V-ing
I could have been suckling you could have been suckling she could have been suckling we could have been suckling you could have been suckling they could have been suckling
Negación
Forma simple
I could not suckle you could not suckle she could not suckle we could not suckle you could not suckle they could not suckle
Forma con V-ing
I could not be suckling you could not be suckling she could not be suckling we could not be suckling you could not be suckling they could not be suckling
Perfecto
I could not have suckled you could not have suckled she could not have suckled we could not have suckled you could not have suckled they could not have suckled
Perfecto con V-ing
I could not have been suckling you could not have been suckling she could not have been suckling we could not have been suckling you could not have been suckling they could not have been suckling
Forma interrogativa
Forma simple
could I suckle? could you suckle? could she suckle? could we suckle? could you suckle? could they suckle?
Forma con V-ing
could I be suckling? could you be suckling? could she be suckling? could we be suckling? could you be suckling? could they be suckling?
Perfecto
could I have suckled? could you have suckled? could she have suckled? could we have suckled? could you have suckled? could they have suckled?
Perfecto con V-ing
could I have been suckling? could you have been suckling? could she have been suckling? could we have been suckling? could you have been suckling? could they have been suckling?
Forma interro-negativa
Forma simple
could I not suckle? could you not suckle? could she not suckle? could we not suckle? could you not suckle? could they not suckle?
Forma con V-ing
could I not be suckling? could you not be suckling? could she not be suckling? could we not be suckling? could you not be suckling? could they not be suckling?
Perfecto
could I not have suckled? could you not have suckled? could she not have suckled? could we not have suckled? could you not have suckled? could they not have suckled?
Perfecto con V-ing
could I not have been suckling? could you not have been suckling? could she not have been suckling? could we not have been suckling? could you not have been suckling? could they not have been suckling?