English verb conjugation
MUST SNICKER

Regular verb: snicker - snickered - snickered

Affirmation

Simple form	V-ing form
I must snicker you must snicker she must snicker we must snicker you must snicker they must snicker	I must be snickering you must be snickering she must be snickering we must be snickering you must be snickering they must be snickering
Perfect	V-ing perfect
I must have snickered you must have snickered she 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 she must have been snickering we must have been snickering you must have been snickering they must have been snickering

Negation

Simple form	V-ing form
I mustn't snicker you mustn't snicker she mustn't snicker we mustn't snicker you mustn't snicker they mustn't snicker	I mustn't be snickering you mustn't be snickering she mustn't be snickering we mustn't be snickering you mustn't be snickering they mustn't be snickering
Perfect	V-ing perfect
I mustn't have snickered you mustn't have snickered she mustn't have snickered we mustn't have snickered you mustn't have snickered they mustn't have snickered	I mustn't have been snickering you mustn't have been snickering she mustn't have been snickering we mustn't have been snickering you mustn't have been snickering they mustn't have been snickering

Interrogative form

Simple form	V-ing form
must I snicker? must you snicker? must she snicker? must we snicker? must you snicker? must they snicker?	must I be snickering? must you be snickering? must she be snickering? must we be snickering? must you be snickering? must they be snickering?
Perfect	V-ing perfect
must I have snickered? must you have snickered? must she 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 she have been snickering? must we have been snickering? must you have been snickering? must they have been snickering?

Interro-negative form

Simple form	V-ing form
mustn't I snicker? mustn't you snicker? mustn't she snicker? mustn't we snicker? mustn't you snicker? mustn't they snicker?	mustn't I be snickering? mustn't you be snickering? mustn't she be snickering? mustn't we be snickering? mustn't you be snickering? mustn't they be snickering?
Perfect	V-ing perfect
mustn't I have snickered? mustn't you have snickered? mustn't she have snickered? mustn't we have snickered? mustn't you have snickered? mustn't they have snickered?	mustn't I have been snickering? mustn't you have been snickering? mustn't she have been snickering? mustn't we have been snickering? mustn't you have been snickering? mustn't they have been snickering?