English verb conjugation
MUST GRAPH

Regular verb: graph - graphed - graphed

Affirmation

Simple form	V-ing form
I must graph you must graph he must graph we must graph you must graph they must graph	I must be graphing you must be graphing he must be graphing we must be graphing you must be graphing they must be graphing
Perfect	V-ing perfect
I must have graphed you must have graphed he must have graphed we must have graphed you must have graphed they must have graphed	I must have been graphing you must have been graphing he must have been graphing we must have been graphing you must have been graphing they must have been graphing

Negation

Simple form	V-ing form
I mustn't graph you mustn't graph he mustn't graph we mustn't graph you mustn't graph they mustn't graph	I mustn't be graphing you mustn't be graphing he mustn't be graphing we mustn't be graphing you mustn't be graphing they mustn't be graphing
Perfect	V-ing perfect
I mustn't have graphed you mustn't have graphed he mustn't have graphed we mustn't have graphed you mustn't have graphed they mustn't have graphed	I mustn't have been graphing you mustn't have been graphing he mustn't have been graphing we mustn't have been graphing you mustn't have been graphing they mustn't have been graphing

Interrogative form

Simple form	V-ing form
must I graph? must you graph? must he graph? must we graph? must you graph? must they graph?	must I be graphing? must you be graphing? must he be graphing? must we be graphing? must you be graphing? must they be graphing?
Perfect	V-ing perfect
must I have graphed? must you have graphed? must he have graphed? must we have graphed? must you have graphed? must they have graphed?	must I have been graphing? must you have been graphing? must he have been graphing? must we have been graphing? must you have been graphing? must they have been graphing?

Interro-negative form

Simple form	V-ing form
mustn't I graph? mustn't you graph? mustn't he graph? mustn't we graph? mustn't you graph? mustn't they graph?	mustn't I be graphing? mustn't you be graphing? mustn't he be graphing? mustn't we be graphing? mustn't you be graphing? mustn't they be graphing?
Perfect	V-ing perfect
mustn't I have graphed? mustn't you have graphed? mustn't he have graphed? mustn't we have graphed? mustn't you have graphed? mustn't they have graphed?	mustn't I have been graphing? mustn't you have been graphing? mustn't he have been graphing? mustn't we have been graphing? mustn't you have been graphing? mustn't they have been graphing?