could alibi
Regular verb: alibi - alibied- alibied

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could alibi
you could alibi
he could alibi
we could alibi
you could alibi
they could alibi 	I could be alibiing
you could be alibiing
he could be alibiing
we could be alibiing
you could be alibiing
they could be alibiing	I could have alibied
you could have alibied
he could have alibied
we could have alibied
you could have alibied
they could have alibied	I could have been alibiing
you could have been alibiing
he could have been alibiing
we could have been alibiing
you could have been alibiing
they could have been alibiing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not alibi
you could not alibi
he could not alibi
we could not alibi
you could not alibi
they could not alibi 	I could not be alibiing
you could not be alibiing
he could not be alibiing
we could not be alibiing
you could not be alibiing
they could not be alibiing	I could not have alibied
you could not have alibied
he could not have alibied
we could not have alibied
you could not have alibied
they could not have alibied	I could not have been alibiing
you could not have been alibiing
he could not have been alibiing
we could not have been alibiing
you could not have been alibiing
they could not have been alibiing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I alibi?
could you alibi?
could he alibi?
could we alibi?
could you alibi?
could they alibi? 	could I be alibiing?
could you be alibiing?
could he be alibiing?
could we be alibiing?
could you be alibiing?
could they be alibiing? 	could I have alibied?
could you have alibied?
could he have alibied?
could we have alibied?
could you have alibied?
could they have alibied? 	could I have been alibiing?
could you have been alibiing?
could he have been alibiing?
could we have been alibiing?
could you have been alibiing?
could they have been alibiing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not alibi?
could you not alibi?
could he not alibi?
could we not alibi?
could you not alibi?
could they not alibi? 	could I not be alibiing?
could you not be alibiing?
could he not be alibiing?
could we not be alibiing?
could you not be alibiing?
could they not be alibiing? 	could I not have alibied?
could you not have alibied?
could he not have alibied?
could we not have alibied?
could you not have alibied?
could they not have alibied? 	could I not have been alibiing?
could you not have been alibiing?
could he not have been alibiing?
could we not have been alibiing?
could you not have been alibiing?
could they not have been alibiing?