English verb conjugation
MUST STRUCTURE

Regular verb: structure - structured - structured

Affirmation

Simple form	V-ing form
I must structure you must structure he must structure we must structure you must structure they must structure	I must be structuring you must be structuring he must be structuring we must be structuring you must be structuring they must be structuring
Perfect	V-ing perfect
I must have structured you must have structured he must have structured we must have structured you must have structured they must have structured	I must have been structuring you must have been structuring he must have been structuring we must have been structuring you must have been structuring they must have been structuring

Negation

Simple form	V-ing form
I mustn't structure you mustn't structure he mustn't structure we mustn't structure you mustn't structure they mustn't structure	I mustn't be structuring you mustn't be structuring he mustn't be structuring we mustn't be structuring you mustn't be structuring they mustn't be structuring
Perfect	V-ing perfect
I mustn't have structured you mustn't have structured he mustn't have structured we mustn't have structured you mustn't have structured they mustn't have structured	I mustn't have been structuring you mustn't have been structuring he mustn't have been structuring we mustn't have been structuring you mustn't have been structuring they mustn't have been structuring

Interrogative form

Simple form	V-ing form
must I structure? must you structure? must he structure? must we structure? must you structure? must they structure?	must I be structuring? must you be structuring? must he be structuring? must we be structuring? must you be structuring? must they be structuring?
Perfect	V-ing perfect
must I have structured? must you have structured? must he have structured? must we have structured? must you have structured? must they have structured?	must I have been structuring? must you have been structuring? must he have been structuring? must we have been structuring? must you have been structuring? must they have been structuring?

Interro-negative form

Simple form	V-ing form
mustn't I structure? mustn't you structure? mustn't he structure? mustn't we structure? mustn't you structure? mustn't they structure?	mustn't I be structuring? mustn't you be structuring? mustn't he be structuring? mustn't we be structuring? mustn't you be structuring? mustn't they be structuring?
Perfect	V-ing perfect
mustn't I have structured? mustn't you have structured? mustn't he have structured? mustn't we have structured? mustn't you have structured? mustn't they have structured?	mustn't I have been structuring? mustn't you have been structuring? mustn't he have been structuring? mustn't we have been structuring? mustn't you have been structuring? mustn't they have been structuring?