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 can't invalid
you can't invalid
he can't invalid
we can't invalid
you can't invalid
they can't invalid 	I can't be invaliding
you can't be invaliding
he can't be invaliding
we can't be invaliding
you can't be invaliding
they can't be invaliding	I can't have invalided
you can't have invalided
he can't have invalided
we can't have invalided
you can't have invalided
they can't have invalided	I can't have been invaliding
you can't have been invaliding
he can't have been invaliding
we can't have been invaliding
you can't have been invaliding
they can't 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't I invalid?
can't you invalid?
can't he invalid?
can't we invalid?
can't you invalid?
can't they invalid? 	can't I be invaliding?
can't you be invaliding?
can't he be invaliding?
can't we be invaliding?
can't you be invaliding?
can't they be invaliding? 	can't I have invalided?
can't you have invalided?
can't he have invalided?
can't we have invalided?
can't you have invalided?
can't they have invalided? 	can't I have been invaliding?
can't you have been invaliding?
can't he have been invaliding?
can't we have been invaliding?
can't you have been invaliding?
can't they have been invaliding?