English verb conjugation
MUST PREWARM

Regular verb: prewarm - prewarmed - prewarmed

Affirmation

Simple form	V-ing form
I must prewarm you must prewarm she must prewarm we must prewarm you must prewarm they must prewarm	I must be prewarming you must be prewarming she must be prewarming we must be prewarming you must be prewarming they must be prewarming
Perfect	V-ing perfect
I must have prewarmed you must have prewarmed she must have prewarmed we must have prewarmed you must have prewarmed they must have prewarmed	I must have been prewarming you must have been prewarming she must have been prewarming we must have been prewarming you must have been prewarming they must have been prewarming

Negation

Simple form	V-ing form
I mustn't prewarm you mustn't prewarm she mustn't prewarm we mustn't prewarm you mustn't prewarm they mustn't prewarm	I mustn't be prewarming you mustn't be prewarming she mustn't be prewarming we mustn't be prewarming you mustn't be prewarming they mustn't be prewarming
Perfect	V-ing perfect
I mustn't have prewarmed you mustn't have prewarmed she mustn't have prewarmed we mustn't have prewarmed you mustn't have prewarmed they mustn't have prewarmed	I mustn't have been prewarming you mustn't have been prewarming she mustn't have been prewarming we mustn't have been prewarming you mustn't have been prewarming they mustn't have been prewarming

Interrogative form

Simple form	V-ing form
must I prewarm? must you prewarm? must she prewarm? must we prewarm? must you prewarm? must they prewarm?	must I be prewarming? must you be prewarming? must she be prewarming? must we be prewarming? must you be prewarming? must they be prewarming?
Perfect	V-ing perfect
must I have prewarmed? must you have prewarmed? must she have prewarmed? must we have prewarmed? must you have prewarmed? must they have prewarmed?	must I have been prewarming? must you have been prewarming? must she have been prewarming? must we have been prewarming? must you have been prewarming? must they have been prewarming?

Interro-negative form

Simple form	V-ing form
mustn't I prewarm? mustn't you prewarm? mustn't she prewarm? mustn't we prewarm? mustn't you prewarm? mustn't they prewarm?	mustn't I be prewarming? mustn't you be prewarming? mustn't she be prewarming? mustn't we be prewarming? mustn't you be prewarming? mustn't they be prewarming?
Perfect	V-ing perfect
mustn't I have prewarmed? mustn't you have prewarmed? mustn't she have prewarmed? mustn't we have prewarmed? mustn't you have prewarmed? mustn't they have prewarmed?	mustn't I have been prewarming? mustn't you have been prewarming? mustn't she have been prewarming? mustn't we have been prewarming? mustn't you have been prewarming? mustn't they have been prewarming?