can drain
Verbo regular: drain - drained- drained

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can drain
you can drain
she can drain
we can drain
you can drain
they can drain 	I can be draining
you can be draining
she can be draining
we can be draining
you can be draining
they can be draining	I can have drained
you can have drained
she can have drained
we can have drained
you can have drained
they can have drained	I can have been draining
you can have been draining
she can have been draining
we can have been draining
you can have been draining
they can have been draining	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot drain
you cannot drain
she cannot drain
we cannot drain
you cannot drain
they cannot drain 	I cannot be draining
you cannot be draining
she cannot be draining
we cannot be draining
you cannot be draining
they cannot be draining	I cannot have drained
you cannot have drained
she cannot have drained
we cannot have drained
you cannot have drained
they cannot have drained	I cannot have been draining
you cannot have been draining
she cannot have been draining
we cannot have been draining
you cannot have been draining
they cannot have been draining	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I drain?
can you drain?
can she drain?
can we drain?
can you drain?
can they drain? 	can I be draining?
can you be draining?
can she be draining?
can we be draining?
can you be draining?
can they be draining? 	can I have drained?
can you have drained?
can she have drained?
can we have drained?
can you have drained?
can they have drained? 	can I have been draining?
can you have been draining?
can she have been draining?
can we have been draining?
can you have been draining?
can they have been draining? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not drain?
can you not drain?
can she not drain?
can we not drain?
can you not drain?
can they not drain? 	can I not be draining?
can you not be draining?
can she not be draining?
can we not be draining?
can you not be draining?
can they not be draining? 	can I not have drained?
can you not have drained?
can she not have drained?
can we not have drained?
can you not have drained?
can they not have drained? 	can I not have been draining?
can you not have been draining?
can she not have been draining?
can we not have been draining?
can you not have been draining?
can they not have been draining?