could golf
Regular verb: golf - golfed- golfed

Affirmation 	
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I could golf
you could golf
he could golf
we could golf
you could golf
they could golf 	I could be golfing
you could be golfing
he could be golfing
we could be golfing
you could be golfing
they could be golfing	I could have golfed
you could have golfed
he could have golfed
we could have golfed
you could have golfed
they could have golfed	I could have been golfing
you could have been golfing
he could have been golfing
we could have been golfing
you could have been golfing
they could have been golfing	

Negation 	
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I couldn't golf
you couldn't golf
he couldn't golf
we couldn't golf
you couldn't golf
they couldn't golf 	I couldn't be golfing
you couldn't be golfing
he couldn't be golfing
we couldn't be golfing
you couldn't be golfing
they couldn't be golfing	I couldn't have golfed
you couldn't have golfed
he couldn't have golfed
we couldn't have golfed
you couldn't have golfed
they couldn't have golfed	I couldn't have been golfing
you couldn't have been golfing
he couldn't have been golfing
we couldn't have been golfing
you couldn't have been golfing
they couldn't have been golfing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I golf?
could you golf?
could he golf?
could we golf?
could you golf?
could they golf? 	could I be golfing?
could you be golfing?
could he be golfing?
could we be golfing?
could you be golfing?
could they be golfing? 	could I have golfed?
could you have golfed?
could he have golfed?
could we have golfed?
could you have golfed?
could they have golfed? 	could I have been golfing?
could you have been golfing?
could he have been golfing?
could we have been golfing?
could you have been golfing?
could they have been golfing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I golf?
couldn't you golf?
couldn't he golf?
couldn't we golf?
couldn't you golf?
couldn't they golf? 	couldn't I be golfing?
couldn't you be golfing?
couldn't he be golfing?
couldn't we be golfing?
couldn't you be golfing?
couldn't they be golfing? 	couldn't I have golfed?
couldn't you have golfed?
couldn't he have golfed?
couldn't we have golfed?
couldn't you have golfed?
couldn't they have golfed? 	couldn't I have been golfing?
couldn't you have been golfing?
couldn't he have been golfing?
couldn't we have been golfing?
couldn't you have been golfing?
couldn't they have been golfing?