English verb conjugation
CAN ILLUSTRATE

Regular verb: illustrate - illustrated - illustrated

Affirmation

Simple form	V-ing form
I can illustrate you can illustrate he can illustrate we can illustrate you can illustrate they can illustrate	I can be illustrating you can be illustrating he can be illustrating we can be illustrating you can be illustrating they can be illustrating
Perfect	V-ing perfect
I can have illustrated you can have illustrated he can have illustrated we can have illustrated you can have illustrated they can have illustrated	I can have been illustrating you can have been illustrating he can have been illustrating we can have been illustrating you can have been illustrating they can have been illustrating

Negation

Simple form	V-ing form
I can't illustrate you can't illustrate he can't illustrate we can't illustrate you can't illustrate they can't illustrate	I can't be illustrating you can't be illustrating he can't be illustrating we can't be illustrating you can't be illustrating they can't be illustrating
Perfect	V-ing perfect
I can't have illustrated you can't have illustrated he can't have illustrated we can't have illustrated you can't have illustrated they can't have illustrated	I can't have been illustrating you can't have been illustrating he can't have been illustrating we can't have been illustrating you can't have been illustrating they can't have been illustrating

Interrogative form

Simple form	V-ing form
can I illustrate? can you illustrate? can he illustrate? can we illustrate? can you illustrate? can they illustrate?	can I be illustrating? can you be illustrating? can he be illustrating? can we be illustrating? can you be illustrating? can they be illustrating?
Perfect	V-ing perfect
can I have illustrated? can you have illustrated? can he have illustrated? can we have illustrated? can you have illustrated? can they have illustrated?	can I have been illustrating? can you have been illustrating? can he have been illustrating? can we have been illustrating? can you have been illustrating? can they have been illustrating?

Interro-negative form

Simple form	V-ing form
can't I illustrate? can't you illustrate? can't he illustrate? can't we illustrate? can't you illustrate? can't they illustrate?	can't I be illustrating? can't you be illustrating? can't he be illustrating? can't we be illustrating? can't you be illustrating? can't they be illustrating?
Perfect	V-ing perfect
can't I have illustrated? can't you have illustrated? can't he have illustrated? can't we have illustrated? can't you have illustrated? can't they have illustrated?	can't I have been illustrating? can't you have been illustrating? can't he have been illustrating? can't we have been illustrating? can't you have been illustrating? can't they have been illustrating?