must pin
Verbo regular: pin - pinned- pinned

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must pin
you must pin
he must pin
we must pin
you must pin
they must pin 	I must be pinning
you must be pinning
he must be pinning
we must be pinning
you must be pinning
they must be pinning	I must have pinned
you must have pinned
he must have pinned
we must have pinned
you must have pinned
they must have pinned	I must have been pinning
you must have been pinning
he must have been pinning
we must have been pinning
you must have been pinning
they must have been pinning	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't pin
you mustn't pin
he mustn't pin
we mustn't pin
you mustn't pin
they mustn't pin 	I mustn't be pinning
you mustn't be pinning
he mustn't be pinning
we mustn't be pinning
you mustn't be pinning
they mustn't be pinning	I mustn't have pinned
you mustn't have pinned
he mustn't have pinned
we mustn't have pinned
you mustn't have pinned
they mustn't have pinned	I mustn't have been pinning
you mustn't have been pinning
he mustn't have been pinning
we mustn't have been pinning
you mustn't have been pinning
they mustn't have been pinning	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I pin?
must you pin?
must he pin?
must we pin?
must you pin?
must they pin? 	must I be pinning?
must you be pinning?
must he be pinning?
must we be pinning?
must you be pinning?
must they be pinning? 	must I have pinned?
must you have pinned?
must he have pinned?
must we have pinned?
must you have pinned?
must they have pinned? 	must I have been pinning?
must you have been pinning?
must he have been pinning?
must we have been pinning?
must you have been pinning?
must they have been pinning? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I pin?
mustn't you pin?
mustn't he pin?
mustn't we pin?
mustn't you pin?
mustn't they pin? 	mustn't I be pinning?
mustn't you be pinning?
mustn't he be pinning?
mustn't we be pinning?
mustn't you be pinning?
mustn't they be pinning? 	mustn't I have pinned?
mustn't you have pinned?
mustn't he have pinned?
mustn't we have pinned?
mustn't you have pinned?
mustn't they have pinned? 	mustn't I have been pinning?
mustn't you have been pinning?
mustn't he have been pinning?
mustn't we have been pinning?
mustn't you have been pinning?
mustn't they have been pinning?