English verb conjugation
MUST SPAM

Regular verb: spam - spamed - spamed

Affirmation

Simple form	V-ing form
I must spam you must spam she must spam we must spam you must spam they must spam	I must be spaming you must be spaming she must be spaming we must be spaming you must be spaming they must be spaming
Perfect	V-ing perfect
I must have spamed you must have spamed she must have spamed we must have spamed you must have spamed they must have spamed	I must have been spaming you must have been spaming she must have been spaming we must have been spaming you must have been spaming they must have been spaming

Negation

Simple form	V-ing form
I mustn't spam you mustn't spam she mustn't spam we mustn't spam you mustn't spam they mustn't spam	I mustn't be spaming you mustn't be spaming she mustn't be spaming we mustn't be spaming you mustn't be spaming they mustn't be spaming
Perfect	V-ing perfect
I mustn't have spamed you mustn't have spamed she mustn't have spamed we mustn't have spamed you mustn't have spamed they mustn't have spamed	I mustn't have been spaming you mustn't have been spaming she mustn't have been spaming we mustn't have been spaming you mustn't have been spaming they mustn't have been spaming

Interrogative form

Simple form	V-ing form
must I spam? must you spam? must she spam? must we spam? must you spam? must they spam?	must I be spaming? must you be spaming? must she be spaming? must we be spaming? must you be spaming? must they be spaming?
Perfect	V-ing perfect
must I have spamed? must you have spamed? must she have spamed? must we have spamed? must you have spamed? must they have spamed?	must I have been spaming? must you have been spaming? must she have been spaming? must we have been spaming? must you have been spaming? must they have been spaming?

Interro-negative form

Simple form	V-ing form
mustn't I spam? mustn't you spam? mustn't she spam? mustn't we spam? mustn't you spam? mustn't they spam?	mustn't I be spaming? mustn't you be spaming? mustn't she be spaming? mustn't we be spaming? mustn't you be spaming? mustn't they be spaming?
Perfect	V-ing perfect
mustn't I have spamed? mustn't you have spamed? mustn't she have spamed? mustn't we have spamed? mustn't you have spamed? mustn't they have spamed?	mustn't I have been spaming? mustn't you have been spaming? mustn't she have been spaming? mustn't we have been spaming? mustn't you have been spaming? mustn't they have been spaming?