English verb conjugation
MUST SPAM

Regular verb: spam - spamed - spamed

Affirmation

Simple form	V-ing form
I must spam you must spam he must spam we must spam you must spam they must spam	I must be spaming you must be spaming he 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 he 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 he 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 must not spam you must not spam he must not spam we must not spam you must not spam they must not spam	I must not be spaming you must not be spaming he must not be spaming we must not be spaming you must not be spaming they must not be spaming
Perfect	V-ing perfect
I must not have spamed you must not have spamed he must not have spamed we must not have spamed you must not have spamed they must not have spamed	I must not have been spaming you must not have been spaming he must not have been spaming we must not have been spaming you must not have been spaming they must not have been spaming

Interrogative form

Simple form	V-ing form
must I spam? must you spam? must he spam? must we spam? must you spam? must they spam?	must I be spaming? must you be spaming? must he 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 he 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 he 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
must I not spam? must you not spam? must he not spam? must we not spam? must you not spam? must they not spam?	must I not be spaming? must you not be spaming? must he not be spaming? must we not be spaming? must you not be spaming? must they not be spaming?
Perfect	V-ing perfect
must I not have spamed? must you not have spamed? must he not have spamed? must we not have spamed? must you not have spamed? must they not have spamed?	must I not have been spaming? must you not have been spaming? must he not have been spaming? must we not have been spaming? must you not have been spaming? must they not have been spaming?