English verb conjugation
MUST RIVET

Regular verb: rivet - riveted - riveted

Affirmation

Simple form	V-ing form
I must rivet you must rivet he must rivet we must rivet you must rivet they must rivet	I must be riveting you must be riveting he must be riveting we must be riveting you must be riveting they must be riveting
Perfect	V-ing perfect
I must have riveted you must have riveted he must have riveted we must have riveted you must have riveted they must have riveted	I must have been riveting you must have been riveting he must have been riveting we must have been riveting you must have been riveting they must have been riveting

Negation

Simple form	V-ing form
I mustn't rivet you mustn't rivet he mustn't rivet we mustn't rivet you mustn't rivet they mustn't rivet	I mustn't be riveting you mustn't be riveting he mustn't be riveting we mustn't be riveting you mustn't be riveting they mustn't be riveting
Perfect	V-ing perfect
I mustn't have riveted you mustn't have riveted he mustn't have riveted we mustn't have riveted you mustn't have riveted they mustn't have riveted	I mustn't have been riveting you mustn't have been riveting he mustn't have been riveting we mustn't have been riveting you mustn't have been riveting they mustn't have been riveting

Interrogative form

Simple form	V-ing form
must I rivet? must you rivet? must he rivet? must we rivet? must you rivet? must they rivet?	must I be riveting? must you be riveting? must he be riveting? must we be riveting? must you be riveting? must they be riveting?
Perfect	V-ing perfect
must I have riveted? must you have riveted? must he have riveted? must we have riveted? must you have riveted? must they have riveted?	must I have been riveting? must you have been riveting? must he have been riveting? must we have been riveting? must you have been riveting? must they have been riveting?

Interro-negative form

Simple form	V-ing form
mustn't I rivet? mustn't you rivet? mustn't he rivet? mustn't we rivet? mustn't you rivet? mustn't they rivet?	mustn't I be riveting? mustn't you be riveting? mustn't he be riveting? mustn't we be riveting? mustn't you be riveting? mustn't they be riveting?
Perfect	V-ing perfect
mustn't I have riveted? mustn't you have riveted? mustn't he have riveted? mustn't we have riveted? mustn't you have riveted? mustn't they have riveted?	mustn't I have been riveting? mustn't you have been riveting? mustn't he have been riveting? mustn't we have been riveting? mustn't you have been riveting? mustn't they have been riveting?