must snigger
Verbo regular: snigger - sniggered- sniggered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must snigger
you must snigger
she must snigger
we must snigger
you must snigger
they must snigger 	I must be sniggering
you must be sniggering
she must be sniggering
we must be sniggering
you must be sniggering
they must be sniggering	I must have sniggered
you must have sniggered
she must have sniggered
we must have sniggered
you must have sniggered
they must have sniggered	I must have been sniggering
you must have been sniggering
she must have been sniggering
we must have been sniggering
you must have been sniggering
they must have been sniggering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not snigger
you must not snigger
she must not snigger
we must not snigger
you must not snigger
they must not snigger 	I must not be sniggering
you must not be sniggering
she must not be sniggering
we must not be sniggering
you must not be sniggering
they must not be sniggering	I must not have sniggered
you must not have sniggered
she must not have sniggered
we must not have sniggered
you must not have sniggered
they must not have sniggered	I must not have been sniggering
you must not have been sniggering
she must not have been sniggering
we must not have been sniggering
you must not have been sniggering
they must not have been sniggering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I snigger?
must you snigger?
must she snigger?
must we snigger?
must you snigger?
must they snigger? 	must I be sniggering?
must you be sniggering?
must she be sniggering?
must we be sniggering?
must you be sniggering?
must they be sniggering? 	must I have sniggered?
must you have sniggered?
must she have sniggered?
must we have sniggered?
must you have sniggered?
must they have sniggered? 	must I have been sniggering?
must you have been sniggering?
must she have been sniggering?
must we have been sniggering?
must you have been sniggering?
must they have been sniggering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not snigger?
must you not snigger?
must she not snigger?
must we not snigger?
must you not snigger?
must they not snigger? 	must I not be sniggering?
must you not be sniggering?
must she not be sniggering?
must we not be sniggering?
must you not be sniggering?
must they not be sniggering? 	must I not have sniggered?
must you not have sniggered?
must she not have sniggered?
must we not have sniggered?
must you not have sniggered?
must they not have sniggered? 	must I not have been sniggering?
must you not have been sniggering?
must she not have been sniggering?
must we not have been sniggering?
must you not have been sniggering?
must they not have been sniggering?