English verb conjugation
MUST INSULATE

Regular verb: insulate - insulated - insulated

Affirmation

Simple form	V-ing form
I must insulate you must insulate he must insulate we must insulate you must insulate they must insulate	I must be insulating you must be insulating he must be insulating we must be insulating you must be insulating they must be insulating
Perfect	V-ing perfect
I must have insulated you must have insulated he must have insulated we must have insulated you must have insulated they must have insulated	I must have been insulating you must have been insulating he must have been insulating we must have been insulating you must have been insulating they must have been insulating

Negation

Simple form	V-ing form
I mustn't insulate you mustn't insulate he mustn't insulate we mustn't insulate you mustn't insulate they mustn't insulate	I mustn't be insulating you mustn't be insulating he mustn't be insulating we mustn't be insulating you mustn't be insulating they mustn't be insulating
Perfect	V-ing perfect
I mustn't have insulated you mustn't have insulated he mustn't have insulated we mustn't have insulated you mustn't have insulated they mustn't have insulated	I mustn't have been insulating you mustn't have been insulating he mustn't have been insulating we mustn't have been insulating you mustn't have been insulating they mustn't have been insulating

Interrogative form

Simple form	V-ing form
must I insulate? must you insulate? must he insulate? must we insulate? must you insulate? must they insulate?	must I be insulating? must you be insulating? must he be insulating? must we be insulating? must you be insulating? must they be insulating?
Perfect	V-ing perfect
must I have insulated? must you have insulated? must he have insulated? must we have insulated? must you have insulated? must they have insulated?	must I have been insulating? must you have been insulating? must he have been insulating? must we have been insulating? must you have been insulating? must they have been insulating?

Interro-negative form

Simple form	V-ing form
mustn't I insulate? mustn't you insulate? mustn't he insulate? mustn't we insulate? mustn't you insulate? mustn't they insulate?	mustn't I be insulating? mustn't you be insulating? mustn't he be insulating? mustn't we be insulating? mustn't you be insulating? mustn't they be insulating?
Perfect	V-ing perfect
mustn't I have insulated? mustn't you have insulated? mustn't he have insulated? mustn't we have insulated? mustn't you have insulated? mustn't they have insulated?	mustn't I have been insulating? mustn't you have been insulating? mustn't he have been insulating? mustn't we have been insulating? mustn't you have been insulating? mustn't they have been insulating?