must slur
Regular verb: slur - slurred- slurred

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

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

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

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