I can illustrate you can illustrate she can illustrate we can illustrate you can illustrate they can illustrate
V-ing form
I can be illustrating you can be illustrating she can be illustrating we can be illustrating you can be illustrating they can be illustrating
Perfect
I can have illustrated you can have illustrated she can have illustrated we can have illustrated you can have illustrated they can have illustrated
V-ing perfect
I can have been illustrating you can have been illustrating she can have been illustrating we can have been illustrating you can have been illustrating they can have been illustrating
Negation
Simple form
I cannot illustrate you cannot illustrate she cannot illustrate we cannot illustrate you cannot illustrate they cannot illustrate
V-ing form
I cannot be illustrating you cannot be illustrating she cannot be illustrating we cannot be illustrating you cannot be illustrating they cannot be illustrating
Perfect
I cannot have illustrated you cannot have illustrated she cannot have illustrated we cannot have illustrated you cannot have illustrated they cannot have illustrated
V-ing perfect
I cannot have been illustrating you cannot have been illustrating she cannot have been illustrating we cannot have been illustrating you cannot have been illustrating they cannot have been illustrating
Interrogative form
Simple form
can I illustrate? can you illustrate? can she illustrate? can we illustrate? can you illustrate? can they illustrate?
V-ing form
can I be illustrating? can you be illustrating? can she be illustrating? can we be illustrating? can you be illustrating? can they be illustrating?
Perfect
can I have illustrated? can you have illustrated? can she have illustrated? can we have illustrated? can you have illustrated? can they have illustrated?
V-ing perfect
can I have been illustrating? can you have been illustrating? can she have been illustrating? can we have been illustrating? can you have been illustrating? can they have been illustrating?
Interro-negative form
Simple form
can I not illustrate? can you not illustrate? can she not illustrate? can we not illustrate? can you not illustrate? can they not illustrate?
V-ing form
can I not be illustrating? can you not be illustrating? can she not be illustrating? can we not be illustrating? can you not be illustrating? can they not be illustrating?
Perfect
can I not have illustrated? can you not have illustrated? can she not have illustrated? can we not have illustrated? can you not have illustrated? can they not have illustrated?
V-ing perfect
can I not have been illustrating? can you not have been illustrating? can she not have been illustrating? can we not have been illustrating? can you not have been illustrating? can they not have been illustrating?