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 must not plan you must not plan he must not plan we must not plan you must not plan they must not plan	I must not be planning you must not be planning he must not be planning we must not be planning you must not be planning they must not be planning
Perfect	V-ing perfect
I must not have planned you must not have planned he must not have planned we must not have planned you must not have planned they must not have planned	I must not have been planning you must not have been planning he must not have been planning we must not have been planning you must not have been planning they must not 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
must I not plan? must you not plan? must he not plan? must we not plan? must you not plan? must they not plan?	must I not be planning? must you not be planning? must he not be planning? must we not be planning? must you not be planning? must they not be planning?
Perfect	V-ing perfect
must I not have planned? must you not have planned? must he not have planned? must we not have planned? must you not have planned? must they not have planned?	must I not have been planning? must you not have been planning? must he not have been planning? must we not have been planning? must you not have been planning? must they not have been planning?