English verb conjugation
MUST SNIGGLE

Regular verb: sniggle - sniggled - sniggled

Affirmation

Simple form	V-ing form
I must sniggle you must sniggle he must sniggle we must sniggle you must sniggle they must sniggle	I must be sniggling you must be sniggling he must be sniggling we must be sniggling you must be sniggling they must be sniggling
Perfect	V-ing perfect
I must have sniggled you must have sniggled he must have sniggled we must have sniggled you must have sniggled they must have sniggled	I must have been sniggling you must have been sniggling he must have been sniggling we must have been sniggling you must have been sniggling they must have been sniggling

Negation

Simple form	V-ing form
I mustn't sniggle you mustn't sniggle he mustn't sniggle we mustn't sniggle you mustn't sniggle they mustn't sniggle	I mustn't be sniggling you mustn't be sniggling he mustn't be sniggling we mustn't be sniggling you mustn't be sniggling they mustn't be sniggling
Perfect	V-ing perfect
I mustn't have sniggled you mustn't have sniggled he mustn't have sniggled we mustn't have sniggled you mustn't have sniggled they mustn't have sniggled	I mustn't have been sniggling you mustn't have been sniggling he mustn't have been sniggling we mustn't have been sniggling you mustn't have been sniggling they mustn't have been sniggling

Interrogative form

Simple form	V-ing form
must I sniggle? must you sniggle? must he sniggle? must we sniggle? must you sniggle? must they sniggle?	must I be sniggling? must you be sniggling? must he be sniggling? must we be sniggling? must you be sniggling? must they be sniggling?
Perfect	V-ing perfect
must I have sniggled? must you have sniggled? must he have sniggled? must we have sniggled? must you have sniggled? must they have sniggled?	must I have been sniggling? must you have been sniggling? must he have been sniggling? must we have been sniggling? must you have been sniggling? must they have been sniggling?

Interro-negative form

Simple form	V-ing form
mustn't I sniggle? mustn't you sniggle? mustn't he sniggle? mustn't we sniggle? mustn't you sniggle? mustn't they sniggle?	mustn't I be sniggling? mustn't you be sniggling? mustn't he be sniggling? mustn't we be sniggling? mustn't you be sniggling? mustn't they be sniggling?
Perfect	V-ing perfect
mustn't I have sniggled? mustn't you have sniggled? mustn't he have sniggled? mustn't we have sniggled? mustn't you have sniggled? mustn't they have sniggled?	mustn't I have been sniggling? mustn't you have been sniggling? mustn't he have been sniggling? mustn't we have been sniggling? mustn't you have been sniggling? mustn't they have been sniggling?