English verb conjugation
MUST PREFOCUS

Regular verb: prefocus - prefocused - prefocused

Affirmation

Simple form	V-ing form
I must prefocus you must prefocus he must prefocus we must prefocus you must prefocus they must prefocus	I must be prefocusing you must be prefocusing he must be prefocusing we must be prefocusing you must be prefocusing they must be prefocusing
Perfect	V-ing perfect
I must have prefocused you must have prefocused he must have prefocused we must have prefocused you must have prefocused they must have prefocused	I must have been prefocusing you must have been prefocusing he must have been prefocusing we must have been prefocusing you must have been prefocusing they must have been prefocusing

Negation

Simple form	V-ing form
I mustn't prefocus you mustn't prefocus he mustn't prefocus we mustn't prefocus you mustn't prefocus they mustn't prefocus	I mustn't be prefocusing you mustn't be prefocusing he mustn't be prefocusing we mustn't be prefocusing you mustn't be prefocusing they mustn't be prefocusing
Perfect	V-ing perfect
I mustn't have prefocused you mustn't have prefocused he mustn't have prefocused we mustn't have prefocused you mustn't have prefocused they mustn't have prefocused	I mustn't have been prefocusing you mustn't have been prefocusing he mustn't have been prefocusing we mustn't have been prefocusing you mustn't have been prefocusing they mustn't have been prefocusing

Interrogative form

Simple form	V-ing form
must I prefocus? must you prefocus? must he prefocus? must we prefocus? must you prefocus? must they prefocus?	must I be prefocusing? must you be prefocusing? must he be prefocusing? must we be prefocusing? must you be prefocusing? must they be prefocusing?
Perfect	V-ing perfect
must I have prefocused? must you have prefocused? must he have prefocused? must we have prefocused? must you have prefocused? must they have prefocused?	must I have been prefocusing? must you have been prefocusing? must he have been prefocusing? must we have been prefocusing? must you have been prefocusing? must they have been prefocusing?

Interro-negative form

Simple form	V-ing form
mustn't I prefocus? mustn't you prefocus? mustn't he prefocus? mustn't we prefocus? mustn't you prefocus? mustn't they prefocus?	mustn't I be prefocusing? mustn't you be prefocusing? mustn't he be prefocusing? mustn't we be prefocusing? mustn't you be prefocusing? mustn't they be prefocusing?
Perfect	V-ing perfect
mustn't I have prefocused? mustn't you have prefocused? mustn't he have prefocused? mustn't we have prefocused? mustn't you have prefocused? mustn't they have prefocused?	mustn't I have been prefocusing? mustn't you have been prefocusing? mustn't he have been prefocusing? mustn't we have been prefocusing? mustn't you have been prefocusing? mustn't they have been prefocusing?