I could suckle you could suckle he could suckle we could suckle you could suckle they could suckle
Forma con V-ing
I could be suckling you could be suckling he could be suckling we could be suckling you could be suckling they could be suckling
Perfecto
I could have suckled you could have suckled he 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 he could have been suckling we could have been suckling you could have been suckling they could have been suckling
Negación
Forma simple
I couldn't suckle you couldn't suckle he couldn't suckle we couldn't suckle you couldn't suckle they couldn't suckle
Forma con V-ing
I couldn't be suckling you couldn't be suckling he couldn't be suckling we couldn't be suckling you couldn't be suckling they couldn't be suckling
Perfecto
I couldn't have suckled you couldn't have suckled he couldn't have suckled we couldn't have suckled you couldn't have suckled they couldn't have suckled
Perfecto con V-ing
I couldn't have been suckling you couldn't have been suckling he couldn't have been suckling we couldn't have been suckling you couldn't have been suckling they couldn't have been suckling
Forma interrogativa
Forma simple
could I suckle? could you suckle? could he suckle? could we suckle? could you suckle? could they suckle?
Forma con V-ing
could I be suckling? could you be suckling? could he be suckling? could we be suckling? could you be suckling? could they be suckling?
Perfecto
could I have suckled? could you have suckled? could he 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 he have been suckling? could we have been suckling? could you have been suckling? could they have been suckling?
Forma interro-negativa
Forma simple
couldn't I suckle? couldn't you suckle? couldn't he suckle? couldn't we suckle? couldn't you suckle? couldn't they suckle?
Forma con V-ing
couldn't I be suckling? couldn't you be suckling? couldn't he be suckling? couldn't we be suckling? couldn't you be suckling? couldn't they be suckling?
Perfecto
couldn't I have suckled? couldn't you have suckled? couldn't he have suckled? couldn't we have suckled? couldn't you have suckled? couldn't they have suckled?
Perfecto con V-ing
couldn't I have been suckling? couldn't you have been suckling? couldn't he have been suckling? couldn't we have been suckling? couldn't you have been suckling? couldn't they have been suckling?