I can knuckle you can knuckle he can knuckle we can knuckle you can knuckle they can knuckle
Forma com V-ing
I can be knuckling you can be knuckling he can be knuckling we can be knuckling you can be knuckling they can be knuckling
Perfeito
I can have knuckled you can have knuckled he can have knuckled we can have knuckled you can have knuckled they can have knuckled
Perfeito com V-ing
I can have been knuckling you can have been knuckling he can have been knuckling we can have been knuckling you can have been knuckling they can have been knuckling
Negação
Forma simple
I cannot knuckle you cannot knuckle he cannot knuckle we cannot knuckle you cannot knuckle they cannot knuckle
Forma com V-ing
I cannot be knuckling you cannot be knuckling he cannot be knuckling we cannot be knuckling you cannot be knuckling they cannot be knuckling
Perfeito
I cannot have knuckled you cannot have knuckled he cannot have knuckled we cannot have knuckled you cannot have knuckled they cannot have knuckled
Perfeito com V-ing
I cannot have been knuckling you cannot have been knuckling he cannot have been knuckling we cannot have been knuckling you cannot have been knuckling they cannot have been knuckling
Forma interrogativa
Forma simple
can I knuckle? can you knuckle? can he knuckle? can we knuckle? can you knuckle? can they knuckle?
Forma com V-ing
can I be knuckling? can you be knuckling? can he be knuckling? can we be knuckling? can you be knuckling? can they be knuckling?
Perfeito
can I have knuckled? can you have knuckled? can he have knuckled? can we have knuckled? can you have knuckled? can they have knuckled?
Perfeito com V-ing
can I have been knuckling? can you have been knuckling? can he have been knuckling? can we have been knuckling? can you have been knuckling? can they have been knuckling?
Forma interro-Negação
Forma simple
can I not knuckle? can you not knuckle? can he not knuckle? can we not knuckle? can you not knuckle? can they not knuckle?
Forma com V-ing
can I not be knuckling? can you not be knuckling? can he not be knuckling? can we not be knuckling? can you not be knuckling? can they not be knuckling?
Perfeito
can I not have knuckled? can you not have knuckled? can he not have knuckled? can we not have knuckled? can you not have knuckled? can they not have knuckled?
Perfeito com V-ing
can I not have been knuckling? can you not have been knuckling? can he not have been knuckling? can we not have been knuckling? can you not have been knuckling? can they not have been knuckling?