Conjugación del verbo inglés
COULD KNUCKLE

Verbo regular: knuckle - knuckled - knuckled

Afirmación

Forma simple	Forma con V-ing
I could knuckle you could knuckle she could knuckle we could knuckle you could knuckle they could knuckle	I could be knuckling you could be knuckling she could be knuckling we could be knuckling you could be knuckling they could be knuckling
Perfecto	Perfecto con V-ing
I could have knuckled you could have knuckled she could have knuckled we could have knuckled you could have knuckled they could have knuckled	I could have been knuckling you could have been knuckling she could have been knuckling we could have been knuckling you could have been knuckling they could have been knuckling

Negación

Forma simple	Forma con V-ing
I couldn't knuckle you couldn't knuckle she couldn't knuckle we couldn't knuckle you couldn't knuckle they couldn't knuckle	I couldn't be knuckling you couldn't be knuckling she couldn't be knuckling we couldn't be knuckling you couldn't be knuckling they couldn't be knuckling
Perfecto	Perfecto con V-ing
I couldn't have knuckled you couldn't have knuckled she couldn't have knuckled we couldn't have knuckled you couldn't have knuckled they couldn't have knuckled	I couldn't have been knuckling you couldn't have been knuckling she couldn't have been knuckling we couldn't have been knuckling you couldn't have been knuckling they couldn't have been knuckling

Forma interrogativa

Forma simple	Forma con V-ing
could I knuckle? could you knuckle? could she knuckle? could we knuckle? could you knuckle? could they knuckle?	could I be knuckling? could you be knuckling? could she be knuckling? could we be knuckling? could you be knuckling? could they be knuckling?
Perfecto	Perfecto con V-ing
could I have knuckled? could you have knuckled? could she have knuckled? could we have knuckled? could you have knuckled? could they have knuckled?	could I have been knuckling? could you have been knuckling? could she have been knuckling? could we have been knuckling? could you have been knuckling? could they have been knuckling?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I knuckle? couldn't you knuckle? couldn't she knuckle? couldn't we knuckle? couldn't you knuckle? couldn't they knuckle?	couldn't I be knuckling? couldn't you be knuckling? couldn't she be knuckling? couldn't we be knuckling? couldn't you be knuckling? couldn't they be knuckling?
Perfecto	Perfecto con V-ing
couldn't I have knuckled? couldn't you have knuckled? couldn't she have knuckled? couldn't we have knuckled? couldn't you have knuckled? couldn't they have knuckled?	couldn't I have been knuckling? couldn't you have been knuckling? couldn't she have been knuckling? couldn't we have been knuckling? couldn't you have been knuckling? couldn't they have been knuckling?