Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could born you could born he could born we could born you could born they could born
V-ing form
I could be borning you could be borning he could be borning we could be borning you could be borning they could be borning
Perfect
I could have borned you could have borned he could have borned we could have borned you could have borned they could have borned
V-ing perfect
I could have been borning you could have been borning he could have been borning we could have been borning you could have been borning they could have been borning
Negation
Simple form
I couldn't born you couldn't born he couldn't born we couldn't born you couldn't born they couldn't born
V-ing form
I couldn't be borning you couldn't be borning he couldn't be borning we couldn't be borning you couldn't be borning they couldn't be borning
Perfect
I couldn't have borned you couldn't have borned he couldn't have borned we couldn't have borned you couldn't have borned they couldn't have borned
V-ing perfect
I couldn't have been borning you couldn't have been borning he couldn't have been borning we couldn't have been borning you couldn't have been borning they couldn't have been borning
Interrogative form
Simple form
could I born? could you born? could he born? could we born? could you born? could they born?
V-ing form
could I be borning? could you be borning? could he be borning? could we be borning? could you be borning? could they be borning?
Perfect
could I have borned? could you have borned? could he have borned? could we have borned? could you have borned? could they have borned?
V-ing perfect
could I have been borning? could you have been borning? could he have been borning? could we have been borning? could you have been borning? could they have been borning?
Interro-negative form
Simple form
couldn't I born? couldn't you born? couldn't he born? couldn't we born? couldn't you born? couldn't they born?
V-ing form
couldn't I be borning? couldn't you be borning? couldn't he be borning? couldn't we be borning? couldn't you be borning? couldn't they be borning?
Perfect
couldn't I have borned? couldn't you have borned? couldn't he have borned? couldn't we have borned? couldn't you have borned? couldn't they have borned?
V-ing perfect
couldn't I have been borning? couldn't you have been borning? couldn't he have been borning? couldn't we have been borning? couldn't you have been borning? couldn't they have been borning?