can ail
Verbo regular: ail - ailed- ailed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can ail
you can ail
he can ail
we can ail
you can ail
they can ail 	I can be ailing
you can be ailing
he can be ailing
we can be ailing
you can be ailing
they can be ailing	I can have ailed
you can have ailed
he can have ailed
we can have ailed
you can have ailed
they can have ailed	I can have been ailing
you can have been ailing
he can have been ailing
we can have been ailing
you can have been ailing
they can have been ailing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can't ail
you can't ail
he can't ail
we can't ail
you can't ail
they can't ail 	I can't be ailing
you can't be ailing
he can't be ailing
we can't be ailing
you can't be ailing
they can't be ailing	I can't have ailed
you can't have ailed
he can't have ailed
we can't have ailed
you can't have ailed
they can't have ailed	I can't have been ailing
you can't have been ailing
he can't have been ailing
we can't have been ailing
you can't have been ailing
they can't have been ailing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I ail?
can you ail?
can he ail?
can we ail?
can you ail?
can they ail? 	can I be ailing?
can you be ailing?
can he be ailing?
can we be ailing?
can you be ailing?
can they be ailing? 	can I have ailed?
can you have ailed?
can he have ailed?
can we have ailed?
can you have ailed?
can they have ailed? 	can I have been ailing?
can you have been ailing?
can he have been ailing?
can we have been ailing?
can you have been ailing?
can they have been ailing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can't I ail?
can't you ail?
can't he ail?
can't we ail?
can't you ail?
can't they ail? 	can't I be ailing?
can't you be ailing?
can't he be ailing?
can't we be ailing?
can't you be ailing?
can't they be ailing? 	can't I have ailed?
can't you have ailed?
can't he have ailed?
can't we have ailed?
can't you have ailed?
can't they have ailed? 	can't I have been ailing?
can't you have been ailing?
can't he have been ailing?
can't we have been ailing?
can't you have been ailing?
can't they have been ailing?