could sunbathe
Regular verb: sunbathe - sunbathed- sunbathed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could sunbathe
you could sunbathe
she could sunbathe
we could sunbathe
you could sunbathe
they could sunbathe 	I could be sunbathing
you could be sunbathing
she could be sunbathing
we could be sunbathing
you could be sunbathing
they could be sunbathing	I could have sunbathed
you could have sunbathed
she could have sunbathed
we could have sunbathed
you could have sunbathed
they could have sunbathed	I could have been sunbathing
you could have been sunbathing
she could have been sunbathing
we could have been sunbathing
you could have been sunbathing
they could have been sunbathing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't sunbathe
you couldn't sunbathe
she couldn't sunbathe
we couldn't sunbathe
you couldn't sunbathe
they couldn't sunbathe 	I couldn't be sunbathing
you couldn't be sunbathing
she couldn't be sunbathing
we couldn't be sunbathing
you couldn't be sunbathing
they couldn't be sunbathing	I couldn't have sunbathed
you couldn't have sunbathed
she couldn't have sunbathed
we couldn't have sunbathed
you couldn't have sunbathed
they couldn't have sunbathed	I couldn't have been sunbathing
you couldn't have been sunbathing
she couldn't have been sunbathing
we couldn't have been sunbathing
you couldn't have been sunbathing
they couldn't have been sunbathing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I sunbathe?
could you sunbathe?
could she sunbathe?
could we sunbathe?
could you sunbathe?
could they sunbathe? 	could I be sunbathing?
could you be sunbathing?
could she be sunbathing?
could we be sunbathing?
could you be sunbathing?
could they be sunbathing? 	could I have sunbathed?
could you have sunbathed?
could she have sunbathed?
could we have sunbathed?
could you have sunbathed?
could they have sunbathed? 	could I have been sunbathing?
could you have been sunbathing?
could she have been sunbathing?
could we have been sunbathing?
could you have been sunbathing?
could they have been sunbathing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I sunbathe?
couldn't you sunbathe?
couldn't she sunbathe?
couldn't we sunbathe?
couldn't you sunbathe?
couldn't they sunbathe? 	couldn't I be sunbathing?
couldn't you be sunbathing?
couldn't she be sunbathing?
couldn't we be sunbathing?
couldn't you be sunbathing?
couldn't they be sunbathing? 	couldn't I have sunbathed?
couldn't you have sunbathed?
couldn't she have sunbathed?
couldn't we have sunbathed?
couldn't you have sunbathed?
couldn't they have sunbathed? 	couldn't I have been sunbathing?
couldn't you have been sunbathing?
couldn't she have been sunbathing?
couldn't we have been sunbathing?
couldn't you have been sunbathing?
couldn't they have been sunbathing?