I can tug you can tug he can tug we can tug you can tug they can tug
Forma con V-ing
I can be tugging you can be tugging he can be tugging we can be tugging you can be tugging they can be tugging
Perfecto
I can have tugged you can have tugged he can have tugged we can have tugged you can have tugged they can have tugged
Perfecto con V-ing
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
Negación
Forma simple
I can't tug you can't tug he can't tug we can't tug you can't tug they can't tug
Forma con V-ing
I can't be tugging you can't be tugging he can't be tugging we can't be tugging you can't be tugging they can't be tugging
Perfecto
I can't have tugged you can't have tugged he can't have tugged we can't have tugged you can't have tugged they can't have tugged
Perfecto con V-ing
I can't have been tugging you can't have been tugging he can't have been tugging we can't have been tugging you can't have been tugging they can't have been tugging
Forma interrogativa
Forma simple
can I tug? can you tug? can he tug? can we tug? can you tug? can they tug?
Forma con V-ing
can I be tugging? can you be tugging? can he be tugging? can we be tugging? can you be tugging? can they be tugging?
Perfecto
can I have tugged? can you have tugged? can he have tugged? can we have tugged? can you have tugged? can they have tugged?
Perfecto con V-ing
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-negativa
Forma simple
can't I tug? can't you tug? can't he tug? can't we tug? can't you tug? can't they tug?
Forma con V-ing
can't I be tugging? can't you be tugging? can't he be tugging? can't we be tugging? can't you be tugging? can't they be tugging?
Perfecto
can't I have tugged? can't you have tugged? can't he have tugged? can't we have tugged? can't you have tugged? can't they have tugged?
Perfecto con V-ing
can't I have been tugging? can't you have been tugging? can't he have been tugging? can't we have been tugging? can't you have been tugging? can't they have been tugging?