English verb conjugation
MUST SULK

Regular verb: sulk - sulked - sulked

Affirmation

Simple form	V-ing form
I must sulk you must sulk she must sulk we must sulk you must sulk they must sulk	I must be sulking you must be sulking she must be sulking we must be sulking you must be sulking they must be sulking
Perfect	V-ing perfect
I must have sulked you must have sulked she must have sulked we must have sulked you must have sulked they must have sulked	I must have been sulking you must have been sulking she must have been sulking we must have been sulking you must have been sulking they must have been sulking

Negation

Simple form	V-ing form
I mustn't sulk you mustn't sulk she mustn't sulk we mustn't sulk you mustn't sulk they mustn't sulk	I mustn't be sulking you mustn't be sulking she mustn't be sulking we mustn't be sulking you mustn't be sulking they mustn't be sulking
Perfect	V-ing perfect
I mustn't have sulked you mustn't have sulked she mustn't have sulked we mustn't have sulked you mustn't have sulked they mustn't have sulked	I mustn't have been sulking you mustn't have been sulking she mustn't have been sulking we mustn't have been sulking you mustn't have been sulking they mustn't have been sulking

Interrogative form

Simple form	V-ing form
must I sulk? must you sulk? must she sulk? must we sulk? must you sulk? must they sulk?	must I be sulking? must you be sulking? must she be sulking? must we be sulking? must you be sulking? must they be sulking?
Perfect	V-ing perfect
must I have sulked? must you have sulked? must she have sulked? must we have sulked? must you have sulked? must they have sulked?	must I have been sulking? must you have been sulking? must she have been sulking? must we have been sulking? must you have been sulking? must they have been sulking?

Interro-negative form

Simple form	V-ing form
mustn't I sulk? mustn't you sulk? mustn't she sulk? mustn't we sulk? mustn't you sulk? mustn't they sulk?	mustn't I be sulking? mustn't you be sulking? mustn't she be sulking? mustn't we be sulking? mustn't you be sulking? mustn't they be sulking?
Perfect	V-ing perfect
mustn't I have sulked? mustn't you have sulked? mustn't she have sulked? mustn't we have sulked? mustn't you have sulked? mustn't they have sulked?	mustn't I have been sulking? mustn't you have been sulking? mustn't she have been sulking? mustn't we have been sulking? mustn't you have been sulking? mustn't they have been sulking?