can vein
Verbo regular: vein - veined- veined

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can vein
you can vein
he can vein
we can vein
you can vein
they can vein 	I can be veining
you can be veining
he can be veining
we can be veining
you can be veining
they can be veining	I can have veined
you can have veined
he can have veined
we can have veined
you can have veined
they can have veined	I can have been veining
you can have been veining
he can have been veining
we can have been veining
you can have been veining
they can have been veining	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot vein
you cannot vein
he cannot vein
we cannot vein
you cannot vein
they cannot vein 	I cannot be veining
you cannot be veining
he cannot be veining
we cannot be veining
you cannot be veining
they cannot be veining	I cannot have veined
you cannot have veined
he cannot have veined
we cannot have veined
you cannot have veined
they cannot have veined	I cannot have been veining
you cannot have been veining
he cannot have been veining
we cannot have been veining
you cannot have been veining
they cannot have been veining	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I vein?
can you vein?
can he vein?
can we vein?
can you vein?
can they vein? 	can I be veining?
can you be veining?
can he be veining?
can we be veining?
can you be veining?
can they be veining? 	can I have veined?
can you have veined?
can he have veined?
can we have veined?
can you have veined?
can they have veined? 	can I have been veining?
can you have been veining?
can he have been veining?
can we have been veining?
can you have been veining?
can they have been veining? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not vein?
can you not vein?
can he not vein?
can we not vein?
can you not vein?
can they not vein? 	can I not be veining?
can you not be veining?
can he not be veining?
can we not be veining?
can you not be veining?
can they not be veining? 	can I not have veined?
can you not have veined?
can he not have veined?
can we not have veined?
can you not have veined?
can they not have veined? 	can I not have been veining?
can you not have been veining?
can he not have been veining?
can we not have been veining?
can you not have been veining?
can they not have been veining?