could birth
Regular verb: birth - birthed- birthed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could birth
you could birth
she could birth
we could birth
you could birth
they could birth 	I could be birthing
you could be birthing
she could be birthing
we could be birthing
you could be birthing
they could be birthing	I could have birthed
you could have birthed
she 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
she could have been birthing
we could have been birthing
you could have been birthing
they could have been birthing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't birth
you couldn't birth
she couldn't birth
we couldn't birth
you couldn't birth
they couldn't birth 	I couldn't be birthing
you couldn't be birthing
she couldn't be birthing
we couldn't be birthing
you couldn't be birthing
they couldn't be birthing	I couldn't have birthed
you couldn't have birthed
she couldn't have birthed
we couldn't have birthed
you couldn't have birthed
they couldn't have birthed	I couldn't have been birthing
you couldn't have been birthing
she couldn't have been birthing
we couldn't have been birthing
you couldn't have been birthing
they couldn't have been birthing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I birth?
could you birth?
could she birth?
could we birth?
could you birth?
could they birth? 	could I be birthing?
could you be birthing?
could she be birthing?
could we be birthing?
could you be birthing?
could they be birthing? 	could I have birthed?
could you have birthed?
could she 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 she have been birthing?
could we have been birthing?
could you have been birthing?
could they have been birthing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I birth?
couldn't you birth?
couldn't she birth?
couldn't we birth?
couldn't you birth?
couldn't they birth? 	couldn't I be birthing?
couldn't you be birthing?
couldn't she be birthing?
couldn't we be birthing?
couldn't you be birthing?
couldn't they be birthing? 	couldn't I have birthed?
couldn't you have birthed?
couldn't she have birthed?
couldn't we have birthed?
couldn't you have birthed?
couldn't they have birthed? 	couldn't I have been birthing?
couldn't you have been birthing?
couldn't she have been birthing?
couldn't we have been birthing?
couldn't you have been birthing?
couldn't they have been birthing?