can stub
Verbo regular: stub - stubbed- stubbed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can stub
you can stub
he can stub
we can stub
you can stub
they can stub 	I can be stubbing
you can be stubbing
he can be stubbing
we can be stubbing
you can be stubbing
they can be stubbing	I can have stubbed
you can have stubbed
he can have stubbed
we can have stubbed
you can have stubbed
they can have stubbed	I can have been stubbing
you can have been stubbing
he can have been stubbing
we can have been stubbing
you can have been stubbing
they can have been stubbing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot stub
you cannot stub
he cannot stub
we cannot stub
you cannot stub
they cannot stub 	I cannot be stubbing
you cannot be stubbing
he cannot be stubbing
we cannot be stubbing
you cannot be stubbing
they cannot be stubbing	I cannot have stubbed
you cannot have stubbed
he cannot have stubbed
we cannot have stubbed
you cannot have stubbed
they cannot have stubbed	I cannot have been stubbing
you cannot have been stubbing
he cannot have been stubbing
we cannot have been stubbing
you cannot have been stubbing
they cannot have been stubbing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I stub?
can you stub?
can he stub?
can we stub?
can you stub?
can they stub? 	can I be stubbing?
can you be stubbing?
can he be stubbing?
can we be stubbing?
can you be stubbing?
can they be stubbing? 	can I have stubbed?
can you have stubbed?
can he have stubbed?
can we have stubbed?
can you have stubbed?
can they have stubbed? 	can I have been stubbing?
can you have been stubbing?
can he have been stubbing?
can we have been stubbing?
can you have been stubbing?
can they have been stubbing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not stub?
can you not stub?
can he not stub?
can we not stub?
can you not stub?
can they not stub? 	can I not be stubbing?
can you not be stubbing?
can he not be stubbing?
can we not be stubbing?
can you not be stubbing?
can they not be stubbing? 	can I not have stubbed?
can you not have stubbed?
can he not have stubbed?
can we not have stubbed?
can you not have stubbed?
can they not have stubbed? 	can I not have been stubbing?
can you not have been stubbing?
can he not have been stubbing?
can we not have been stubbing?
can you not have been stubbing?
can they not have been stubbing?