English verb conjugation
MUST PLAN

Regular verb: plan - planned - planned

Affirmation

Simple form	V-ing form
I must plan you must plan he must plan we must plan you must plan they must plan	I must be planning you must be planning he must be planning we must be planning you must be planning they must be planning
Perfect	V-ing perfect
I must have planned you must have planned he must have planned we must have planned you must have planned they must have planned	I must have been planning you must have been planning he must have been planning we must have been planning you must have been planning they must have been planning

Negation

Simple form	V-ing form
I mustn't plan you mustn't plan he mustn't plan we mustn't plan you mustn't plan they mustn't plan	I mustn't be planning you mustn't be planning he mustn't be planning we mustn't be planning you mustn't be planning they mustn't be planning
Perfect	V-ing perfect
I mustn't have planned you mustn't have planned he mustn't have planned we mustn't have planned you mustn't have planned they mustn't have planned	I mustn't have been planning you mustn't have been planning he mustn't have been planning we mustn't have been planning you mustn't have been planning they mustn't have been planning

Interrogative form

Simple form	V-ing form
must I plan? must you plan? must he plan? must we plan? must you plan? must they plan?	must I be planning? must you be planning? must he be planning? must we be planning? must you be planning? must they be planning?
Perfect	V-ing perfect
must I have planned? must you have planned? must he have planned? must we have planned? must you have planned? must they have planned?	must I have been planning? must you have been planning? must he have been planning? must we have been planning? must you have been planning? must they have been planning?

Interro-negative form

Simple form	V-ing form
mustn't I plan? mustn't you plan? mustn't he plan? mustn't we plan? mustn't you plan? mustn't they plan?	mustn't I be planning? mustn't you be planning? mustn't he be planning? mustn't we be planning? mustn't you be planning? mustn't they be planning?
Perfect	V-ing perfect
mustn't I have planned? mustn't you have planned? mustn't he have planned? mustn't we have planned? mustn't you have planned? mustn't they have planned?	mustn't I have been planning? mustn't you have been planning? mustn't he have been planning? mustn't we have been planning? mustn't you have been planning? mustn't they have been planning?