English verb conjugation
MUST OVERBUILD

Irregular verb: overbuild - overbuilt - overbuilt

Affirmation

Simple form	V-ing form
I must overbuild you must overbuild he must overbuild we must overbuild you must overbuild they must overbuild	I must be overbuilding you must be overbuilding he must be overbuilding we must be overbuilding you must be overbuilding they must be overbuilding
Perfect	V-ing perfect
I must have overbuilt you must have overbuilt he must have overbuilt we must have overbuilt you must have overbuilt they must have overbuilt	I must have been overbuilding you must have been overbuilding he must have been overbuilding we must have been overbuilding you must have been overbuilding they must have been overbuilding

Negation

Simple form	V-ing form
I mustn't overbuild you mustn't overbuild he mustn't overbuild we mustn't overbuild you mustn't overbuild they mustn't overbuild	I mustn't be overbuilding you mustn't be overbuilding he mustn't be overbuilding we mustn't be overbuilding you mustn't be overbuilding they mustn't be overbuilding
Perfect	V-ing perfect
I mustn't have overbuilt you mustn't have overbuilt he mustn't have overbuilt we mustn't have overbuilt you mustn't have overbuilt they mustn't have overbuilt	I mustn't have been overbuilding you mustn't have been overbuilding he mustn't have been overbuilding we mustn't have been overbuilding you mustn't have been overbuilding they mustn't have been overbuilding

Interrogative form

Simple form	V-ing form
must I overbuild? must you overbuild? must he overbuild? must we overbuild? must you overbuild? must they overbuild?	must I be overbuilding? must you be overbuilding? must he be overbuilding? must we be overbuilding? must you be overbuilding? must they be overbuilding?
Perfect	V-ing perfect
must I have overbuilt? must you have overbuilt? must he have overbuilt? must we have overbuilt? must you have overbuilt? must they have overbuilt?	must I have been overbuilding? must you have been overbuilding? must he have been overbuilding? must we have been overbuilding? must you have been overbuilding? must they have been overbuilding?

Interro-negative form

Simple form	V-ing form
mustn't I overbuild? mustn't you overbuild? mustn't he overbuild? mustn't we overbuild? mustn't you overbuild? mustn't they overbuild?	mustn't I be overbuilding? mustn't you be overbuilding? mustn't he be overbuilding? mustn't we be overbuilding? mustn't you be overbuilding? mustn't they be overbuilding?
Perfect	V-ing perfect
mustn't I have overbuilt? mustn't you have overbuilt? mustn't he have overbuilt? mustn't we have overbuilt? mustn't you have overbuilt? mustn't they have overbuilt?	mustn't I have been overbuilding? mustn't you have been overbuilding? mustn't he have been overbuilding? mustn't we have been overbuilding? mustn't you have been overbuilding? mustn't they have been overbuilding?