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 can't graph you can't graph she can't graph we can't graph you can't graph they can't graph	I can't be graphing you can't be graphing she can't be graphing we can't be graphing you can't be graphing they can't be graphing
Perfect	V-ing perfect
I can't have graphed you can't have graphed she can't have graphed we can't have graphed you can't have graphed they can't have graphed	I can't have been graphing you can't have been graphing she can't have been graphing we can't have been graphing you can't have been graphing they can't 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't I graph? can't you graph? can't she graph? can't we graph? can't you graph? can't they graph?	can't I be graphing? can't you be graphing? can't she be graphing? can't we be graphing? can't you be graphing? can't they be graphing?
Perfect	V-ing perfect
can't I have graphed? can't you have graphed? can't she have graphed? can't we have graphed? can't you have graphed? can't they have graphed?	can't I have been graphing? can't you have been graphing? can't she have been graphing? can't we have been graphing? can't you have been graphing? can't they have been graphing?