English verb conjugation
MUST PHONE

Regular verb: phone - phoned - phoned

Affirmation

Simple form	V-ing form
I must phone you must phone he must phone we must phone you must phone they must phone	I must be phoning you must be phoning he must be phoning we must be phoning you must be phoning they must be phoning
Perfect	V-ing perfect
I must have phoned you must have phoned he must have phoned we must have phoned you must have phoned they must have phoned	I must have been phoning you must have been phoning he must have been phoning we must have been phoning you must have been phoning they must have been phoning

Negation

Simple form	V-ing form
I mustn't phone you mustn't phone he mustn't phone we mustn't phone you mustn't phone they mustn't phone	I mustn't be phoning you mustn't be phoning he mustn't be phoning we mustn't be phoning you mustn't be phoning they mustn't be phoning
Perfect	V-ing perfect
I mustn't have phoned you mustn't have phoned he mustn't have phoned we mustn't have phoned you mustn't have phoned they mustn't have phoned	I mustn't have been phoning you mustn't have been phoning he mustn't have been phoning we mustn't have been phoning you mustn't have been phoning they mustn't have been phoning

Interrogative form

Simple form	V-ing form
must I phone? must you phone? must he phone? must we phone? must you phone? must they phone?	must I be phoning? must you be phoning? must he be phoning? must we be phoning? must you be phoning? must they be phoning?
Perfect	V-ing perfect
must I have phoned? must you have phoned? must he have phoned? must we have phoned? must you have phoned? must they have phoned?	must I have been phoning? must you have been phoning? must he have been phoning? must we have been phoning? must you have been phoning? must they have been phoning?

Interro-negative form

Simple form	V-ing form
mustn't I phone? mustn't you phone? mustn't he phone? mustn't we phone? mustn't you phone? mustn't they phone?	mustn't I be phoning? mustn't you be phoning? mustn't he be phoning? mustn't we be phoning? mustn't you be phoning? mustn't they be phoning?
Perfect	V-ing perfect
mustn't I have phoned? mustn't you have phoned? mustn't he have phoned? mustn't we have phoned? mustn't you have phoned? mustn't they have phoned?	mustn't I have been phoning? mustn't you have been phoning? mustn't he have been phoning? mustn't we have been phoning? mustn't you have been phoning? mustn't they have been phoning?