could hail
Regular verb: hail - hailed- hailed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could hail
you could hail
she could hail
we could hail
you could hail
they could hail 	I could be hailing
you could be hailing
she could be hailing
we could be hailing
you could be hailing
they could be hailing	I could have hailed
you could have hailed
she could have hailed
we could have hailed
you could have hailed
they could have hailed	I could have been hailing
you could have been hailing
she could have been hailing
we could have been hailing
you could have been hailing
they could have been hailing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't hail
you couldn't hail
she couldn't hail
we couldn't hail
you couldn't hail
they couldn't hail 	I couldn't be hailing
you couldn't be hailing
she couldn't be hailing
we couldn't be hailing
you couldn't be hailing
they couldn't be hailing	I couldn't have hailed
you couldn't have hailed
she couldn't have hailed
we couldn't have hailed
you couldn't have hailed
they couldn't have hailed	I couldn't have been hailing
you couldn't have been hailing
she couldn't have been hailing
we couldn't have been hailing
you couldn't have been hailing
they couldn't have been hailing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I hail?
could you hail?
could she hail?
could we hail?
could you hail?
could they hail? 	could I be hailing?
could you be hailing?
could she be hailing?
could we be hailing?
could you be hailing?
could they be hailing? 	could I have hailed?
could you have hailed?
could she have hailed?
could we have hailed?
could you have hailed?
could they have hailed? 	could I have been hailing?
could you have been hailing?
could she have been hailing?
could we have been hailing?
could you have been hailing?
could they have been hailing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I hail?
couldn't you hail?
couldn't she hail?
couldn't we hail?
couldn't you hail?
couldn't they hail? 	couldn't I be hailing?
couldn't you be hailing?
couldn't she be hailing?
couldn't we be hailing?
couldn't you be hailing?
couldn't they be hailing? 	couldn't I have hailed?
couldn't you have hailed?
couldn't she have hailed?
couldn't we have hailed?
couldn't you have hailed?
couldn't they have hailed? 	couldn't I have been hailing?
couldn't you have been hailing?
couldn't she have been hailing?
couldn't we have been hailing?
couldn't you have been hailing?
couldn't they have been hailing?