I can bilk you can bilk he can bilk we can bilk you can bilk they can bilk
V-ing form
I can be bilking you can be bilking he can be bilking we can be bilking you can be bilking they can be bilking
Perfect
I can have bilked you can have bilked he can have bilked we can have bilked you can have bilked they can have bilked
V-ing perfect
I can have been bilking you can have been bilking he can have been bilking we can have been bilking you can have been bilking they can have been bilking
Negation
Simple form
I cannot bilk you cannot bilk he cannot bilk we cannot bilk you cannot bilk they cannot bilk
V-ing form
I cannot be bilking you cannot be bilking he cannot be bilking we cannot be bilking you cannot be bilking they cannot be bilking
Perfect
I cannot have bilked you cannot have bilked he cannot have bilked we cannot have bilked you cannot have bilked they cannot have bilked
V-ing perfect
I cannot have been bilking you cannot have been bilking he cannot have been bilking we cannot have been bilking you cannot have been bilking they cannot have been bilking
Interrogative form
Simple form
can I bilk? can you bilk? can he bilk? can we bilk? can you bilk? can they bilk?
V-ing form
can I be bilking? can you be bilking? can he be bilking? can we be bilking? can you be bilking? can they be bilking?
Perfect
can I have bilked? can you have bilked? can he have bilked? can we have bilked? can you have bilked? can they have bilked?
V-ing perfect
can I have been bilking? can you have been bilking? can he have been bilking? can we have been bilking? can you have been bilking? can they have been bilking?
Interro-negative form
Simple form
can I not bilk? can you not bilk? can he not bilk? can we not bilk? can you not bilk? can they not bilk?
V-ing form
can I not be bilking? can you not be bilking? can he not be bilking? can we not be bilking? can you not be bilking? can they not be bilking?
Perfect
can I not have bilked? can you not have bilked? can he not have bilked? can we not have bilked? can you not have bilked? can they not have bilked?
V-ing perfect
can I not have been bilking? can you not have been bilking? can he not have been bilking? can we not have been bilking? can you not have been bilking? can they not have been bilking?