English verb conjugation
MUST MOP

Regular verb: mop - mopped - mopped

Affirmation

Simple form	V-ing form
I must mop you must mop he must mop we must mop you must mop they must mop	I must be mopping you must be mopping he must be mopping we must be mopping you must be mopping they must be mopping
Perfect	V-ing perfect
I must have mopped you must have mopped he must have mopped we must have mopped you must have mopped they must have mopped	I must have been mopping you must have been mopping he must have been mopping we must have been mopping you must have been mopping they must have been mopping

Negation

Simple form	V-ing form
I mustn't mop you mustn't mop he mustn't mop we mustn't mop you mustn't mop they mustn't mop	I mustn't be mopping you mustn't be mopping he mustn't be mopping we mustn't be mopping you mustn't be mopping they mustn't be mopping
Perfect	V-ing perfect
I mustn't have mopped you mustn't have mopped he mustn't have mopped we mustn't have mopped you mustn't have mopped they mustn't have mopped	I mustn't have been mopping you mustn't have been mopping he mustn't have been mopping we mustn't have been mopping you mustn't have been mopping they mustn't have been mopping

Interrogative form

Simple form	V-ing form
must I mop? must you mop? must he mop? must we mop? must you mop? must they mop?	must I be mopping? must you be mopping? must he be mopping? must we be mopping? must you be mopping? must they be mopping?
Perfect	V-ing perfect
must I have mopped? must you have mopped? must he have mopped? must we have mopped? must you have mopped? must they have mopped?	must I have been mopping? must you have been mopping? must he have been mopping? must we have been mopping? must you have been mopping? must they have been mopping?

Interro-negative form

Simple form	V-ing form
mustn't I mop? mustn't you mop? mustn't he mop? mustn't we mop? mustn't you mop? mustn't they mop?	mustn't I be mopping? mustn't you be mopping? mustn't he be mopping? mustn't we be mopping? mustn't you be mopping? mustn't they be mopping?
Perfect	V-ing perfect
mustn't I have mopped? mustn't you have mopped? mustn't he have mopped? mustn't we have mopped? mustn't you have mopped? mustn't they have mopped?	mustn't I have been mopping? mustn't you have been mopping? mustn't he have been mopping? mustn't we have been mopping? mustn't you have been mopping? mustn't they have been mopping?