I can backlist you can backlist he can backlist we can backlist you can backlist they can backlist
V-ing form
I can be backlisting you can be backlisting he can be backlisting we can be backlisting you can be backlisting they can be backlisting
Perfect
I can have backlisted you can have backlisted he can have backlisted we can have backlisted you can have backlisted they can have backlisted
V-ing perfect
I can have been backlisting you can have been backlisting he can have been backlisting we can have been backlisting you can have been backlisting they can have been backlisting
Negation
Simple form
I cannot backlist you cannot backlist he cannot backlist we cannot backlist you cannot backlist they cannot backlist
V-ing form
I cannot be backlisting you cannot be backlisting he cannot be backlisting we cannot be backlisting you cannot be backlisting they cannot be backlisting
Perfect
I cannot have backlisted you cannot have backlisted he cannot have backlisted we cannot have backlisted you cannot have backlisted they cannot have backlisted
V-ing perfect
I cannot have been backlisting you cannot have been backlisting he cannot have been backlisting we cannot have been backlisting you cannot have been backlisting they cannot have been backlisting
Interrogative form
Simple form
can I backlist? can you backlist? can he backlist? can we backlist? can you backlist? can they backlist?
V-ing form
can I be backlisting? can you be backlisting? can he be backlisting? can we be backlisting? can you be backlisting? can they be backlisting?
Perfect
can I have backlisted? can you have backlisted? can he have backlisted? can we have backlisted? can you have backlisted? can they have backlisted?
V-ing perfect
can I have been backlisting? can you have been backlisting? can he have been backlisting? can we have been backlisting? can you have been backlisting? can they have been backlisting?
Interro-negative form
Simple form
can I not backlist? can you not backlist? can he not backlist? can we not backlist? can you not backlist? can they not backlist?
V-ing form
can I not be backlisting? can you not be backlisting? can he not be backlisting? can we not be backlisting? can you not be backlisting? can they not be backlisting?
Perfect
can I not have backlisted? can you not have backlisted? can he not have backlisted? can we not have backlisted? can you not have backlisted? can they not have backlisted?
V-ing perfect
can I not have been backlisting? can you not have been backlisting? can he not have been backlisting? can we not have been backlisting? can you not have been backlisting? can they not have been backlisting?