can invalid
Verbo regular: invalid - invalided- invalided

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can invalid
you can invalid
he can invalid
we can invalid
you can invalid
they can invalid 	I can be invaliding
you can be invaliding
he can be invaliding
we can be invaliding
you can be invaliding
they can be invaliding	I can have invalided
you can have invalided
he can have invalided
we can have invalided
you can have invalided
they can have invalided	I can have been invaliding
you can have been invaliding
he can have been invaliding
we can have been invaliding
you can have been invaliding
they can have been invaliding	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot invalid
you cannot invalid
he cannot invalid
we cannot invalid
you cannot invalid
they cannot invalid 	I cannot be invaliding
you cannot be invaliding
he cannot be invaliding
we cannot be invaliding
you cannot be invaliding
they cannot be invaliding	I cannot have invalided
you cannot have invalided
he cannot have invalided
we cannot have invalided
you cannot have invalided
they cannot have invalided	I cannot have been invaliding
you cannot have been invaliding
he cannot have been invaliding
we cannot have been invaliding
you cannot have been invaliding
they cannot have been invaliding	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I invalid?
can you invalid?
can he invalid?
can we invalid?
can you invalid?
can they invalid? 	can I be invaliding?
can you be invaliding?
can he be invaliding?
can we be invaliding?
can you be invaliding?
can they be invaliding? 	can I have invalided?
can you have invalided?
can he have invalided?
can we have invalided?
can you have invalided?
can they have invalided? 	can I have been invaliding?
can you have been invaliding?
can he have been invaliding?
can we have been invaliding?
can you have been invaliding?
can they have been invaliding? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not invalid?
can you not invalid?
can he not invalid?
can we not invalid?
can you not invalid?
can they not invalid? 	can I not be invaliding?
can you not be invaliding?
can he not be invaliding?
can we not be invaliding?
can you not be invaliding?
can they not be invaliding? 	can I not have invalided?
can you not have invalided?
can he not have invalided?
can we not have invalided?
can you not have invalided?
can they not have invalided? 	can I not have been invaliding?
can you not have been invaliding?
can he not have been invaliding?
can we not have been invaliding?
can you not have been invaliding?
can they not have been invaliding?