English verb conjugation
MUST DESERT

Regular verb: desert - deserted - deserted

Affirmation

Simple form	V-ing form
I must desert you must desert he must desert we must desert you must desert they must desert	I must be deserting you must be deserting he must be deserting we must be deserting you must be deserting they must be deserting
Perfect	V-ing perfect
I must have deserted you must have deserted he must have deserted we must have deserted you must have deserted they must have deserted	I must have been deserting you must have been deserting he must have been deserting we must have been deserting you must have been deserting they must have been deserting

Negation

Simple form	V-ing form
I mustn't desert you mustn't desert he mustn't desert we mustn't desert you mustn't desert they mustn't desert	I mustn't be deserting you mustn't be deserting he mustn't be deserting we mustn't be deserting you mustn't be deserting they mustn't be deserting
Perfect	V-ing perfect
I mustn't have deserted you mustn't have deserted he mustn't have deserted we mustn't have deserted you mustn't have deserted they mustn't have deserted	I mustn't have been deserting you mustn't have been deserting he mustn't have been deserting we mustn't have been deserting you mustn't have been deserting they mustn't have been deserting

Interrogative form

Simple form	V-ing form
must I desert? must you desert? must he desert? must we desert? must you desert? must they desert?	must I be deserting? must you be deserting? must he be deserting? must we be deserting? must you be deserting? must they be deserting?
Perfect	V-ing perfect
must I have deserted? must you have deserted? must he have deserted? must we have deserted? must you have deserted? must they have deserted?	must I have been deserting? must you have been deserting? must he have been deserting? must we have been deserting? must you have been deserting? must they have been deserting?

Interro-negative form

Simple form	V-ing form
mustn't I desert? mustn't you desert? mustn't he desert? mustn't we desert? mustn't you desert? mustn't they desert?	mustn't I be deserting? mustn't you be deserting? mustn't he be deserting? mustn't we be deserting? mustn't you be deserting? mustn't they be deserting?
Perfect	V-ing perfect
mustn't I have deserted? mustn't you have deserted? mustn't he have deserted? mustn't we have deserted? mustn't you have deserted? mustn't they have deserted?	mustn't I have been deserting? mustn't you have been deserting? mustn't he have been deserting? mustn't we have been deserting? mustn't you have been deserting? mustn't they have been deserting?