English verb conjugation
MUST SNICKER

Regular verb: snicker - snickered - snickered

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Negation

Simple form	V-ing form
I mustn't snicker you mustn't snicker he 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 he 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 he 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 he 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 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?
Perfect	V-ing perfect
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?

Interro-negative form

Simple form	V-ing form
mustn't I snicker? mustn't you snicker? mustn't he 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 he 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 he 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 he have been snickering? mustn't we have been snickering? mustn't you have been snickering? mustn't they have been snickering?