can tack
Verbo regular: tack - tacked- tacked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can tack
you can tack
he can tack
we can tack
you can tack
they can tack 	I can be tacking
you can be tacking
he can be tacking
we can be tacking
you can be tacking
they can be tacking	I can have tacked
you can have tacked
he can have tacked
we can have tacked
you can have tacked
they can have tacked	I can have been tacking
you can have been tacking
he can have been tacking
we can have been tacking
you can have been tacking
they can have been tacking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot tack
you cannot tack
he cannot tack
we cannot tack
you cannot tack
they cannot tack 	I cannot be tacking
you cannot be tacking
he cannot be tacking
we cannot be tacking
you cannot be tacking
they cannot be tacking	I cannot have tacked
you cannot have tacked
he cannot have tacked
we cannot have tacked
you cannot have tacked
they cannot have tacked	I cannot have been tacking
you cannot have been tacking
he cannot have been tacking
we cannot have been tacking
you cannot have been tacking
they cannot have been tacking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I tack?
can you tack?
can he tack?
can we tack?
can you tack?
can they tack? 	can I be tacking?
can you be tacking?
can he be tacking?
can we be tacking?
can you be tacking?
can they be tacking? 	can I have tacked?
can you have tacked?
can he have tacked?
can we have tacked?
can you have tacked?
can they have tacked? 	can I have been tacking?
can you have been tacking?
can he have been tacking?
can we have been tacking?
can you have been tacking?
can they have been tacking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not tack?
can you not tack?
can he not tack?
can we not tack?
can you not tack?
can they not tack? 	can I not be tacking?
can you not be tacking?
can he not be tacking?
can we not be tacking?
can you not be tacking?
can they not be tacking? 	can I not have tacked?
can you not have tacked?
can he not have tacked?
can we not have tacked?
can you not have tacked?
can they not have tacked? 	can I not have been tacking?
can you not have been tacking?
can he not have been tacking?
can we not have been tacking?
can you not have been tacking?
can they not have been tacking?