must snick
Regular verb: snick - snicked- snicked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must snick
you must snick
he must snick
we must snick
you must snick
they must snick 	I must be snicking
you must be snicking
he must be snicking
we must be snicking
you must be snicking
they must be snicking	I must have snicked
you must have snicked
he must have snicked
we must have snicked
you must have snicked
they must have snicked	I must have been snicking
you must have been snicking
he must have been snicking
we must have been snicking
you must have been snicking
they must have been snicking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't snick
you mustn't snick
he mustn't snick
we mustn't snick
you mustn't snick
they mustn't snick 	I mustn't be snicking
you mustn't be snicking
he mustn't be snicking
we mustn't be snicking
you mustn't be snicking
they mustn't be snicking	I mustn't have snicked
you mustn't have snicked
he mustn't have snicked
we mustn't have snicked
you mustn't have snicked
they mustn't have snicked	I mustn't have been snicking
you mustn't have been snicking
he mustn't have been snicking
we mustn't have been snicking
you mustn't have been snicking
they mustn't have been snicking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I snick?
must you snick?
must he snick?
must we snick?
must you snick?
must they snick? 	must I be snicking?
must you be snicking?
must he be snicking?
must we be snicking?
must you be snicking?
must they be snicking? 	must I have snicked?
must you have snicked?
must he have snicked?
must we have snicked?
must you have snicked?
must they have snicked? 	must I have been snicking?
must you have been snicking?
must he have been snicking?
must we have been snicking?
must you have been snicking?
must they have been snicking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I snick?
mustn't you snick?
mustn't he snick?
mustn't we snick?
mustn't you snick?
mustn't they snick? 	mustn't I be snicking?
mustn't you be snicking?
mustn't he be snicking?
mustn't we be snicking?
mustn't you be snicking?
mustn't they be snicking? 	mustn't I have snicked?
mustn't you have snicked?
mustn't he have snicked?
mustn't we have snicked?
mustn't you have snicked?
mustn't they have snicked? 	mustn't I have been snicking?
mustn't you have been snicking?
mustn't he have been snicking?
mustn't we have been snicking?
mustn't you have been snicking?
mustn't they have been snicking?