English verb conjugation
MAY PLAN

Regular verb: plan - planned - planned

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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