could birth
Verbo regular: birth - birthed- birthed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could birth
you could birth
he could birth
we could birth
you could birth
they could birth 	I could be birthing
you could be birthing
he could be birthing
we could be birthing
you could be birthing
they could be birthing	I could have birthed
you could have birthed
he could have birthed
we could have birthed
you could have birthed
they could have birthed	I could have been birthing
you could have been birthing
he could have been birthing
we could have been birthing
you could have been birthing
they could have been birthing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not birth
you could not birth
he could not birth
we could not birth
you could not birth
they could not birth 	I could not be birthing
you could not be birthing
he could not be birthing
we could not be birthing
you could not be birthing
they could not be birthing	I could not have birthed
you could not have birthed
he could not have birthed
we could not have birthed
you could not have birthed
they could not have birthed	I could not have been birthing
you could not have been birthing
he could not have been birthing
we could not have been birthing
you could not have been birthing
they could not have been birthing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I birth?
could you birth?
could he birth?
could we birth?
could you birth?
could they birth? 	could I be birthing?
could you be birthing?
could he be birthing?
could we be birthing?
could you be birthing?
could they be birthing? 	could I have birthed?
could you have birthed?
could he have birthed?
could we have birthed?
could you have birthed?
could they have birthed? 	could I have been birthing?
could you have been birthing?
could he have been birthing?
could we have been birthing?
could you have been birthing?
could they have been birthing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not birth?
could you not birth?
could he not birth?
could we not birth?
could you not birth?
could they not birth? 	could I not be birthing?
could you not be birthing?
could he not be birthing?
could we not be birthing?
could you not be birthing?
could they not be birthing? 	could I not have birthed?
could you not have birthed?
could he not have birthed?
could we not have birthed?
could you not have birthed?
could they not have birthed? 	could I not have been birthing?
could you not have been birthing?
could he not have been birthing?
could we not have been birthing?
could you not have been birthing?
could they not have been birthing?