can birth
Regular verb: birth - birthed- birthed

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

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

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

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