could slur
Regular verb: slur - slurred- slurred

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could slur
you could slur
he could slur
we could slur
you could slur
they could slur 	I could be slurring
you could be slurring
he could be slurring
we could be slurring
you could be slurring
they could be slurring	I could have slurred
you could have slurred
he could have slurred
we could have slurred
you could have slurred
they could have slurred	I could have been slurring
you could have been slurring
he could have been slurring
we could have been slurring
you could have been slurring
they could have been slurring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't slur
you couldn't slur
he couldn't slur
we couldn't slur
you couldn't slur
they couldn't slur 	I couldn't be slurring
you couldn't be slurring
he couldn't be slurring
we couldn't be slurring
you couldn't be slurring
they couldn't be slurring	I couldn't have slurred
you couldn't have slurred
he couldn't have slurred
we couldn't have slurred
you couldn't have slurred
they couldn't have slurred	I couldn't have been slurring
you couldn't have been slurring
he couldn't have been slurring
we couldn't have been slurring
you couldn't have been slurring
they couldn't have been slurring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I slur?
could you slur?
could he slur?
could we slur?
could you slur?
could they slur? 	could I be slurring?
could you be slurring?
could he be slurring?
could we be slurring?
could you be slurring?
could they be slurring? 	could I have slurred?
could you have slurred?
could he have slurred?
could we have slurred?
could you have slurred?
could they have slurred? 	could I have been slurring?
could you have been slurring?
could he have been slurring?
could we have been slurring?
could you have been slurring?
could they have been slurring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I slur?
couldn't you slur?
couldn't he slur?
couldn't we slur?
couldn't you slur?
couldn't they slur? 	couldn't I be slurring?
couldn't you be slurring?
couldn't he be slurring?
couldn't we be slurring?
couldn't you be slurring?
couldn't they be slurring? 	couldn't I have slurred?
couldn't you have slurred?
couldn't he have slurred?
couldn't we have slurred?
couldn't you have slurred?
couldn't they have slurred? 	couldn't I have been slurring?
couldn't you have been slurring?
couldn't he have been slurring?
couldn't we have been slurring?
couldn't you have been slurring?
couldn't they have been slurring?