can tug
Verbo regular: tug - tugged- tugged

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can tug
you can tug
he can tug
we can tug
you can tug
they can tug 	I can be tugging
you can be tugging
he can be tugging
we can be tugging
you can be tugging
they can be tugging	I can have tugged
you can have tugged
he can have tugged
we can have tugged
you can have tugged
they can have tugged	I can have been tugging
you can have been tugging
he can have been tugging
we can have been tugging
you can have been tugging
they can have been tugging	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot tug
you cannot tug
he cannot tug
we cannot tug
you cannot tug
they cannot tug 	I cannot be tugging
you cannot be tugging
he cannot be tugging
we cannot be tugging
you cannot be tugging
they cannot be tugging	I cannot have tugged
you cannot have tugged
he cannot have tugged
we cannot have tugged
you cannot have tugged
they cannot have tugged	I cannot have been tugging
you cannot have been tugging
he cannot have been tugging
we cannot have been tugging
you cannot have been tugging
they cannot have been tugging	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I tug?
can you tug?
can he tug?
can we tug?
can you tug?
can they tug? 	can I be tugging?
can you be tugging?
can he be tugging?
can we be tugging?
can you be tugging?
can they be tugging? 	can I have tugged?
can you have tugged?
can he have tugged?
can we have tugged?
can you have tugged?
can they have tugged? 	can I have been tugging?
can you have been tugging?
can he have been tugging?
can we have been tugging?
can you have been tugging?
can they have been tugging? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not tug?
can you not tug?
can he not tug?
can we not tug?
can you not tug?
can they not tug? 	can I not be tugging?
can you not be tugging?
can he not be tugging?
can we not be tugging?
can you not be tugging?
can they not be tugging? 	can I not have tugged?
can you not have tugged?
can he not have tugged?
can we not have tugged?
can you not have tugged?
can they not have tugged? 	can I not have been tugging?
can you not have been tugging?
can he not have been tugging?
can we not have been tugging?
can you not have been tugging?
can they not have been tugging?