English verb conjugation
MUST OPPUGN

Regular verb: oppugn - oppugned - oppugned

Affirmation

Simple form	V-ing form
I must oppugn you must oppugn he must oppugn we must oppugn you must oppugn they must oppugn	I must be oppugning you must be oppugning he must be oppugning we must be oppugning you must be oppugning they must be oppugning
Perfect	V-ing perfect
I must have oppugned you must have oppugned he must have oppugned we must have oppugned you must have oppugned they must have oppugned	I must have been oppugning you must have been oppugning he must have been oppugning we must have been oppugning you must have been oppugning they must have been oppugning

Negation

Simple form	V-ing form
I mustn't oppugn you mustn't oppugn he mustn't oppugn we mustn't oppugn you mustn't oppugn they mustn't oppugn	I mustn't be oppugning you mustn't be oppugning he mustn't be oppugning we mustn't be oppugning you mustn't be oppugning they mustn't be oppugning
Perfect	V-ing perfect
I mustn't have oppugned you mustn't have oppugned he mustn't have oppugned we mustn't have oppugned you mustn't have oppugned they mustn't have oppugned	I mustn't have been oppugning you mustn't have been oppugning he mustn't have been oppugning we mustn't have been oppugning you mustn't have been oppugning they mustn't have been oppugning

Interrogative form

Simple form	V-ing form
must I oppugn? must you oppugn? must he oppugn? must we oppugn? must you oppugn? must they oppugn?	must I be oppugning? must you be oppugning? must he be oppugning? must we be oppugning? must you be oppugning? must they be oppugning?
Perfect	V-ing perfect
must I have oppugned? must you have oppugned? must he have oppugned? must we have oppugned? must you have oppugned? must they have oppugned?	must I have been oppugning? must you have been oppugning? must he have been oppugning? must we have been oppugning? must you have been oppugning? must they have been oppugning?

Interro-negative form

Simple form	V-ing form
mustn't I oppugn? mustn't you oppugn? mustn't he oppugn? mustn't we oppugn? mustn't you oppugn? mustn't they oppugn?	mustn't I be oppugning? mustn't you be oppugning? mustn't he be oppugning? mustn't we be oppugning? mustn't you be oppugning? mustn't they be oppugning?
Perfect	V-ing perfect
mustn't I have oppugned? mustn't you have oppugned? mustn't he have oppugned? mustn't we have oppugned? mustn't you have oppugned? mustn't they have oppugned?	mustn't I have been oppugning? mustn't you have been oppugning? mustn't he have been oppugning? mustn't we have been oppugning? mustn't you have been oppugning? mustn't they have been oppugning?