English verb conjugation
CAN GRAPH

Regular verb: graph - graphed - graphed

Affirmation

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

Negation

Simple form	V-ing form
I cannot graph you cannot graph she cannot graph we cannot graph you cannot graph they cannot graph	I cannot be graphing you cannot be graphing she cannot be graphing we cannot be graphing you cannot be graphing they cannot be graphing
Perfect	V-ing perfect
I cannot have graphed you cannot have graphed she cannot have graphed we cannot have graphed you cannot have graphed they cannot have graphed	I cannot have been graphing you cannot have been graphing she cannot have been graphing we cannot have been graphing you cannot have been graphing they cannot have been graphing

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can I not graph? can you not graph? can she not graph? can we not graph? can you not graph? can they not graph?	can I not be graphing? can you not be graphing? can she not be graphing? can we not be graphing? can you not be graphing? can they not be graphing?
Perfect	V-ing perfect
can I not have graphed? can you not have graphed? can she not have graphed? can we not have graphed? can you not have graphed? can they not have graphed?	can I not have been graphing? can you not have been graphing? can she not have been graphing? can we not have been graphing? can you not have been graphing? can they not have been graphing?