English verb conjugation
MUST FUSE

Regular verb: fuse - fused - fused

Affirmation

Simple form	V-ing form
I must fuse you must fuse she must fuse we must fuse you must fuse they must fuse	I must be fusing you must be fusing she must be fusing we must be fusing you must be fusing they must be fusing
Perfect	V-ing perfect
I must have fused you must have fused she must have fused we must have fused you must have fused they must have fused	I must have been fusing you must have been fusing she must have been fusing we must have been fusing you must have been fusing they must have been fusing

Negation

Simple form	V-ing form
I must not fuse you must not fuse she must not fuse we must not fuse you must not fuse they must not fuse	I must not be fusing you must not be fusing she must not be fusing we must not be fusing you must not be fusing they must not be fusing
Perfect	V-ing perfect
I must not have fused you must not have fused she must not have fused we must not have fused you must not have fused they must not have fused	I must not have been fusing you must not have been fusing she must not have been fusing we must not have been fusing you must not have been fusing they must not have been fusing

Interrogative form

Simple form	V-ing form
must I fuse? must you fuse? must she fuse? must we fuse? must you fuse? must they fuse?	must I be fusing? must you be fusing? must she be fusing? must we be fusing? must you be fusing? must they be fusing?
Perfect	V-ing perfect
must I have fused? must you have fused? must she have fused? must we have fused? must you have fused? must they have fused?	must I have been fusing? must you have been fusing? must she have been fusing? must we have been fusing? must you have been fusing? must they have been fusing?

Interro-negative form

Simple form	V-ing form
must I not fuse? must you not fuse? must she not fuse? must we not fuse? must you not fuse? must they not fuse?	must I not be fusing? must you not be fusing? must she not be fusing? must we not be fusing? must you not be fusing? must they not be fusing?
Perfect	V-ing perfect
must I not have fused? must you not have fused? must she not have fused? must we not have fused? must you not have fused? must they not have fused?	must I not have been fusing? must you not have been fusing? must she not have been fusing? must we not have been fusing? must you not have been fusing? must they not have been fusing?