can under
Verbo regular: under - undered- undered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can under
you can under
he can under
we can under
you can under
they can under 	I can be undering
you can be undering
he can be undering
we can be undering
you can be undering
they can be undering	I can have undered
you can have undered
he can have undered
we can have undered
you can have undered
they can have undered	I can have been undering
you can have been undering
he can have been undering
we can have been undering
you can have been undering
they can have been undering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot under
you cannot under
he cannot under
we cannot under
you cannot under
they cannot under 	I cannot be undering
you cannot be undering
he cannot be undering
we cannot be undering
you cannot be undering
they cannot be undering	I cannot have undered
you cannot have undered
he cannot have undered
we cannot have undered
you cannot have undered
they cannot have undered	I cannot have been undering
you cannot have been undering
he cannot have been undering
we cannot have been undering
you cannot have been undering
they cannot have been undering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I under?
can you under?
can he under?
can we under?
can you under?
can they under? 	can I be undering?
can you be undering?
can he be undering?
can we be undering?
can you be undering?
can they be undering? 	can I have undered?
can you have undered?
can he have undered?
can we have undered?
can you have undered?
can they have undered? 	can I have been undering?
can you have been undering?
can he have been undering?
can we have been undering?
can you have been undering?
can they have been undering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not under?
can you not under?
can he not under?
can we not under?
can you not under?
can they not under? 	can I not be undering?
can you not be undering?
can he not be undering?
can we not be undering?
can you not be undering?
can they not be undering? 	can I not have undered?
can you not have undered?
can he not have undered?
can we not have undered?
can you not have undered?
can they not have undered? 	can I not have been undering?
can you not have been undering?
can he not have been undering?
can we not have been undering?
can you not have been undering?
can they not have been undering?