must purr
Verbo regular: purr - purred- purred

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must purr
you must purr
he must purr
we must purr
you must purr
they must purr 	I must be purring
you must be purring
he must be purring
we must be purring
you must be purring
they must be purring	I must have purred
you must have purred
he must have purred
we must have purred
you must have purred
they must have purred	I must have been purring
you must have been purring
he must have been purring
we must have been purring
you must have been purring
they must have been purring	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not purr
you must not purr
he must not purr
we must not purr
you must not purr
they must not purr 	I must not be purring
you must not be purring
he must not be purring
we must not be purring
you must not be purring
they must not be purring	I must not have purred
you must not have purred
he must not have purred
we must not have purred
you must not have purred
they must not have purred	I must not have been purring
you must not have been purring
he must not have been purring
we must not have been purring
you must not have been purring
they must not have been purring	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I purr?
must you purr?
must he purr?
must we purr?
must you purr?
must they purr? 	must I be purring?
must you be purring?
must he be purring?
must we be purring?
must you be purring?
must they be purring? 	must I have purred?
must you have purred?
must he have purred?
must we have purred?
must you have purred?
must they have purred? 	must I have been purring?
must you have been purring?
must he have been purring?
must we have been purring?
must you have been purring?
must they have been purring? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not purr?
must you not purr?
must he not purr?
must we not purr?
must you not purr?
must they not purr? 	must I not be purring?
must you not be purring?
must he not be purring?
must we not be purring?
must you not be purring?
must they not be purring? 	must I not have purred?
must you not have purred?
must he not have purred?
must we not have purred?
must you not have purred?
must they not have purred? 	must I not have been purring?
must you not have been purring?
must he not have been purring?
must we not have been purring?
must you not have been purring?
must they not have been purring?