English verb conjugation
MUST DESERT

Regular verb: desert - deserted - deserted

Affirmation

Simple form	V-ing form
I must desert you must desert she must desert we must desert you must desert they must desert	I must be deserting you must be deserting she 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 she 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 she 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 she 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 she 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 she 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 she 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 she desert? must we desert? must you desert? must they desert?	must I be deserting? must you be deserting? must she 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 she 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 she 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 she 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 she 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 she 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 she have been deserting? mustn't we have been deserting? mustn't you have been deserting? mustn't they have been deserting?