English verb conjugation
MUST PRESURROUND

Regular verb: presurround - presurrounded - presurrounded

Affirmation

Simple form	V-ing form
I must presurround you must presurround he must presurround we must presurround you must presurround they must presurround	I must be presurrounding you must be presurrounding he must be presurrounding we must be presurrounding you must be presurrounding they must be presurrounding
Perfect	V-ing perfect
I must have presurrounded you must have presurrounded he must have presurrounded we must have presurrounded you must have presurrounded they must have presurrounded	I must have been presurrounding you must have been presurrounding he must have been presurrounding we must have been presurrounding you must have been presurrounding they must have been presurrounding

Negation

Simple form	V-ing form
I mustn't presurround you mustn't presurround he mustn't presurround we mustn't presurround you mustn't presurround they mustn't presurround	I mustn't be presurrounding you mustn't be presurrounding he mustn't be presurrounding we mustn't be presurrounding you mustn't be presurrounding they mustn't be presurrounding
Perfect	V-ing perfect
I mustn't have presurrounded you mustn't have presurrounded he mustn't have presurrounded we mustn't have presurrounded you mustn't have presurrounded they mustn't have presurrounded	I mustn't have been presurrounding you mustn't have been presurrounding he mustn't have been presurrounding we mustn't have been presurrounding you mustn't have been presurrounding they mustn't have been presurrounding

Interrogative form

Simple form	V-ing form
must I presurround? must you presurround? must he presurround? must we presurround? must you presurround? must they presurround?	must I be presurrounding? must you be presurrounding? must he be presurrounding? must we be presurrounding? must you be presurrounding? must they be presurrounding?
Perfect	V-ing perfect
must I have presurrounded? must you have presurrounded? must he have presurrounded? must we have presurrounded? must you have presurrounded? must they have presurrounded?	must I have been presurrounding? must you have been presurrounding? must he have been presurrounding? must we have been presurrounding? must you have been presurrounding? must they have been presurrounding?

Interro-negative form

Simple form	V-ing form
mustn't I presurround? mustn't you presurround? mustn't he presurround? mustn't we presurround? mustn't you presurround? mustn't they presurround?	mustn't I be presurrounding? mustn't you be presurrounding? mustn't he be presurrounding? mustn't we be presurrounding? mustn't you be presurrounding? mustn't they be presurrounding?
Perfect	V-ing perfect
mustn't I have presurrounded? mustn't you have presurrounded? mustn't he have presurrounded? mustn't we have presurrounded? mustn't you have presurrounded? mustn't they have presurrounded?	mustn't I have been presurrounding? mustn't you have been presurrounding? mustn't he have been presurrounding? mustn't we have been presurrounding? mustn't you have been presurrounding? mustn't they have been presurrounding?