can cough
Verbo regular: cough - coughed- coughed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can cough
you can cough
she can cough
we can cough
you can cough
they can cough 	I can be coughing
you can be coughing
she can be coughing
we can be coughing
you can be coughing
they can be coughing	I can have coughed
you can have coughed
she can have coughed
we can have coughed
you can have coughed
they can have coughed	I can have been coughing
you can have been coughing
she can have been coughing
we can have been coughing
you can have been coughing
they can have been coughing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can't cough
you can't cough
she can't cough
we can't cough
you can't cough
they can't cough 	I can't be coughing
you can't be coughing
she can't be coughing
we can't be coughing
you can't be coughing
they can't be coughing	I can't have coughed
you can't have coughed
she can't have coughed
we can't have coughed
you can't have coughed
they can't have coughed	I can't have been coughing
you can't have been coughing
she can't have been coughing
we can't have been coughing
you can't have been coughing
they can't have been coughing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I cough?
can you cough?
can she cough?
can we cough?
can you cough?
can they cough? 	can I be coughing?
can you be coughing?
can she be coughing?
can we be coughing?
can you be coughing?
can they be coughing? 	can I have coughed?
can you have coughed?
can she have coughed?
can we have coughed?
can you have coughed?
can they have coughed? 	can I have been coughing?
can you have been coughing?
can she have been coughing?
can we have been coughing?
can you have been coughing?
can they have been coughing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can't I cough?
can't you cough?
can't she cough?
can't we cough?
can't you cough?
can't they cough? 	can't I be coughing?
can't you be coughing?
can't she be coughing?
can't we be coughing?
can't you be coughing?
can't they be coughing? 	can't I have coughed?
can't you have coughed?
can't she have coughed?
can't we have coughed?
can't you have coughed?
can't they have coughed? 	can't I have been coughing?
can't you have been coughing?
can't she have been coughing?
can't we have been coughing?
can't you have been coughing?
can't they have been coughing?