can defend
Verbo regular: defend - defended- defended

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can defend
you can defend
he can defend
we can defend
you can defend
they can defend 	I can be defending
you can be defending
he can be defending
we can be defending
you can be defending
they can be defending	I can have defended
you can have defended
he can have defended
we can have defended
you can have defended
they can have defended	I can have been defending
you can have been defending
he can have been defending
we can have been defending
you can have been defending
they can have been defending	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can't defend
you can't defend
he can't defend
we can't defend
you can't defend
they can't defend 	I can't be defending
you can't be defending
he can't be defending
we can't be defending
you can't be defending
they can't be defending	I can't have defended
you can't have defended
he can't have defended
we can't have defended
you can't have defended
they can't have defended	I can't have been defending
you can't have been defending
he can't have been defending
we can't have been defending
you can't have been defending
they can't have been defending	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I defend?
can you defend?
can he defend?
can we defend?
can you defend?
can they defend? 	can I be defending?
can you be defending?
can he be defending?
can we be defending?
can you be defending?
can they be defending? 	can I have defended?
can you have defended?
can he have defended?
can we have defended?
can you have defended?
can they have defended? 	can I have been defending?
can you have been defending?
can he have been defending?
can we have been defending?
can you have been defending?
can they have been defending? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can't I defend?
can't you defend?
can't he defend?
can't we defend?
can't you defend?
can't they defend? 	can't I be defending?
can't you be defending?
can't he be defending?
can't we be defending?
can't you be defending?
can't they be defending? 	can't I have defended?
can't you have defended?
can't he have defended?
can't we have defended?
can't you have defended?
can't they have defended? 	can't I have been defending?
can't you have been defending?
can't he have been defending?
can't we have been defending?
can't you have been defending?
can't they have been defending?