must snicker
Verbo regular: snicker - snickered- snickered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must snicker
you must snicker
he must snicker
we must snicker
you must snicker
they must snicker 	I must be snickering
you must be snickering
he must be snickering
we must be snickering
you must be snickering
they must be snickering	I must have snickered
you must have snickered
he must have snickered
we must have snickered
you must have snickered
they must have snickered	I must have been snickering
you must have been snickering
he must have been snickering
we must have been snickering
you must have been snickering
they must have been snickering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not snicker
you must not snicker
he must not snicker
we must not snicker
you must not snicker
they must not snicker 	I must not be snickering
you must not be snickering
he must not be snickering
we must not be snickering
you must not be snickering
they must not be snickering	I must not have snickered
you must not have snickered
he must not have snickered
we must not have snickered
you must not have snickered
they must not have snickered	I must not have been snickering
you must not have been snickering
he must not have been snickering
we must not have been snickering
you must not have been snickering
they must not have been snickering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I snicker?
must you snicker?
must he snicker?
must we snicker?
must you snicker?
must they snicker? 	must I be snickering?
must you be snickering?
must he be snickering?
must we be snickering?
must you be snickering?
must they be snickering? 	must I have snickered?
must you have snickered?
must he have snickered?
must we have snickered?
must you have snickered?
must they have snickered? 	must I have been snickering?
must you have been snickering?
must he have been snickering?
must we have been snickering?
must you have been snickering?
must they have been snickering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not snicker?
must you not snicker?
must he not snicker?
must we not snicker?
must you not snicker?
must they not snicker? 	must I not be snickering?
must you not be snickering?
must he not be snickering?
must we not be snickering?
must you not be snickering?
must they not be snickering? 	must I not have snickered?
must you not have snickered?
must he not have snickered?
must we not have snickered?
must you not have snickered?
must they not have snickered? 	must I not have been snickering?
must you not have been snickering?
must he not have been snickering?
must we not have been snickering?
must you not have been snickering?
must they not have been snickering?