English verb conjugation
MUST PREBUILD

Irregular verb: prebuild - prebuilt - prebuilt

Affirmation

Simple form	V-ing form
I must prebuild you must prebuild he must prebuild we must prebuild you must prebuild they must prebuild	I must be prebuilding you must be prebuilding he must be prebuilding we must be prebuilding you must be prebuilding they must be prebuilding
Perfect	V-ing perfect
I must have prebuilt you must have prebuilt he must have prebuilt we must have prebuilt you must have prebuilt they must have prebuilt	I must have been prebuilding you must have been prebuilding he must have been prebuilding we must have been prebuilding you must have been prebuilding they must have been prebuilding

Negation

Simple form	V-ing form
I mustn't prebuild you mustn't prebuild he mustn't prebuild we mustn't prebuild you mustn't prebuild they mustn't prebuild	I mustn't be prebuilding you mustn't be prebuilding he mustn't be prebuilding we mustn't be prebuilding you mustn't be prebuilding they mustn't be prebuilding
Perfect	V-ing perfect
I mustn't have prebuilt you mustn't have prebuilt he mustn't have prebuilt we mustn't have prebuilt you mustn't have prebuilt they mustn't have prebuilt	I mustn't have been prebuilding you mustn't have been prebuilding he mustn't have been prebuilding we mustn't have been prebuilding you mustn't have been prebuilding they mustn't have been prebuilding

Interrogative form

Simple form	V-ing form
must I prebuild? must you prebuild? must he prebuild? must we prebuild? must you prebuild? must they prebuild?	must I be prebuilding? must you be prebuilding? must he be prebuilding? must we be prebuilding? must you be prebuilding? must they be prebuilding?
Perfect	V-ing perfect
must I have prebuilt? must you have prebuilt? must he have prebuilt? must we have prebuilt? must you have prebuilt? must they have prebuilt?	must I have been prebuilding? must you have been prebuilding? must he have been prebuilding? must we have been prebuilding? must you have been prebuilding? must they have been prebuilding?

Interro-negative form

Simple form	V-ing form
mustn't I prebuild? mustn't you prebuild? mustn't he prebuild? mustn't we prebuild? mustn't you prebuild? mustn't they prebuild?	mustn't I be prebuilding? mustn't you be prebuilding? mustn't he be prebuilding? mustn't we be prebuilding? mustn't you be prebuilding? mustn't they be prebuilding?
Perfect	V-ing perfect
mustn't I have prebuilt? mustn't you have prebuilt? mustn't he have prebuilt? mustn't we have prebuilt? mustn't you have prebuilt? mustn't they have prebuilt?	mustn't I have been prebuilding? mustn't you have been prebuilding? mustn't he have been prebuilding? mustn't we have been prebuilding? mustn't you have been prebuilding? mustn't they have been prebuilding?