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 must not mop you must not mop he must not mop we must not mop you must not mop they must not mop	I must not be mopping you must not be mopping he must not be mopping we must not be mopping you must not be mopping they must not be mopping
Perfect	V-ing perfect
I must not have mopped you must not have mopped he must not have mopped we must not have mopped you must not have mopped they must not have mopped	I must not have been mopping you must not have been mopping he must not have been mopping we must not have been mopping you must not have been mopping they must not 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
must I not mop? must you not mop? must he not mop? must we not mop? must you not mop? must they not mop?	must I not be mopping? must you not be mopping? must he not be mopping? must we not be mopping? must you not be mopping? must they not be mopping?
Perfect	V-ing perfect
must I not have mopped? must you not have mopped? must he not have mopped? must we not have mopped? must you not have mopped? must they not have mopped?	must I not have been mopping? must you not have been mopping? must he not have been mopping? must we not have been mopping? must you not have been mopping? must they not have been mopping?