could exhale
Regular verb: exhale - exhaled- exhaled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could exhale
you could exhale
she could exhale
we could exhale
you could exhale
they could exhale 	I could be exhaling
you could be exhaling
she could be exhaling
we could be exhaling
you could be exhaling
they could be exhaling	I could have exhaled
you could have exhaled
she could have exhaled
we could have exhaled
you could have exhaled
they could have exhaled	I could have been exhaling
you could have been exhaling
she could have been exhaling
we could have been exhaling
you could have been exhaling
they could have been exhaling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't exhale
you couldn't exhale
she couldn't exhale
we couldn't exhale
you couldn't exhale
they couldn't exhale 	I couldn't be exhaling
you couldn't be exhaling
she couldn't be exhaling
we couldn't be exhaling
you couldn't be exhaling
they couldn't be exhaling	I couldn't have exhaled
you couldn't have exhaled
she couldn't have exhaled
we couldn't have exhaled
you couldn't have exhaled
they couldn't have exhaled	I couldn't have been exhaling
you couldn't have been exhaling
she couldn't have been exhaling
we couldn't have been exhaling
you couldn't have been exhaling
they couldn't have been exhaling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I exhale?
could you exhale?
could she exhale?
could we exhale?
could you exhale?
could they exhale? 	could I be exhaling?
could you be exhaling?
could she be exhaling?
could we be exhaling?
could you be exhaling?
could they be exhaling? 	could I have exhaled?
could you have exhaled?
could she have exhaled?
could we have exhaled?
could you have exhaled?
could they have exhaled? 	could I have been exhaling?
could you have been exhaling?
could she have been exhaling?
could we have been exhaling?
could you have been exhaling?
could they have been exhaling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I exhale?
couldn't you exhale?
couldn't she exhale?
couldn't we exhale?
couldn't you exhale?
couldn't they exhale? 	couldn't I be exhaling?
couldn't you be exhaling?
couldn't she be exhaling?
couldn't we be exhaling?
couldn't you be exhaling?
couldn't they be exhaling? 	couldn't I have exhaled?
couldn't you have exhaled?
couldn't she have exhaled?
couldn't we have exhaled?
couldn't you have exhaled?
couldn't they have exhaled? 	couldn't I have been exhaling?
couldn't you have been exhaling?
couldn't she have been exhaling?
couldn't we have been exhaling?
couldn't you have been exhaling?
couldn't they have been exhaling?