English verb conjugation
MUST DIFFUSE

Regular verb: diffuse - diffused - diffused

Affirmation

Simple form	V-ing form
I must diffuse you must diffuse he must diffuse we must diffuse you must diffuse they must diffuse	I must be diffusing you must be diffusing he must be diffusing we must be diffusing you must be diffusing they must be diffusing
Perfect	V-ing perfect
I must have diffused you must have diffused he must have diffused we must have diffused you must have diffused they must have diffused	I must have been diffusing you must have been diffusing he must have been diffusing we must have been diffusing you must have been diffusing they must have been diffusing

Negation

Simple form	V-ing form
I must not diffuse you must not diffuse he must not diffuse we must not diffuse you must not diffuse they must not diffuse	I must not be diffusing you must not be diffusing he must not be diffusing we must not be diffusing you must not be diffusing they must not be diffusing
Perfect	V-ing perfect
I must not have diffused you must not have diffused he must not have diffused we must not have diffused you must not have diffused they must not have diffused	I must not have been diffusing you must not have been diffusing he must not have been diffusing we must not have been diffusing you must not have been diffusing they must not have been diffusing

Interrogative form

Simple form	V-ing form
must I diffuse? must you diffuse? must he diffuse? must we diffuse? must you diffuse? must they diffuse?	must I be diffusing? must you be diffusing? must he be diffusing? must we be diffusing? must you be diffusing? must they be diffusing?
Perfect	V-ing perfect
must I have diffused? must you have diffused? must he have diffused? must we have diffused? must you have diffused? must they have diffused?	must I have been diffusing? must you have been diffusing? must he have been diffusing? must we have been diffusing? must you have been diffusing? must they have been diffusing?

Interro-negative form

Simple form	V-ing form
must I not diffuse? must you not diffuse? must he not diffuse? must we not diffuse? must you not diffuse? must they not diffuse?	must I not be diffusing? must you not be diffusing? must he not be diffusing? must we not be diffusing? must you not be diffusing? must they not be diffusing?
Perfect	V-ing perfect
must I not have diffused? must you not have diffused? must he not have diffused? must we not have diffused? must you not have diffused? must they not have diffused?	must I not have been diffusing? must you not have been diffusing? must he not have been diffusing? must we not have been diffusing? must you not have been diffusing? must they not have been diffusing?