I can doodle you can doodle he can doodle we can doodle you can doodle they can doodle
V-ing form
I can be doodling you can be doodling he can be doodling we can be doodling you can be doodling they can be doodling
Perfect
I can have doodled you can have doodled he can have doodled we can have doodled you can have doodled they can have doodled
V-ing perfect
I can have been doodling you can have been doodling he can have been doodling we can have been doodling you can have been doodling they can have been doodling
Negation
Simple form
I cannot doodle you cannot doodle he cannot doodle we cannot doodle you cannot doodle they cannot doodle
V-ing form
I cannot be doodling you cannot be doodling he cannot be doodling we cannot be doodling you cannot be doodling they cannot be doodling
Perfect
I cannot have doodled you cannot have doodled he cannot have doodled we cannot have doodled you cannot have doodled they cannot have doodled
V-ing perfect
I cannot have been doodling you cannot have been doodling he cannot have been doodling we cannot have been doodling you cannot have been doodling they cannot have been doodling
Interrogative form
Simple form
can I doodle? can you doodle? can he doodle? can we doodle? can you doodle? can they doodle?
V-ing form
can I be doodling? can you be doodling? can he be doodling? can we be doodling? can you be doodling? can they be doodling?
Perfect
can I have doodled? can you have doodled? can he have doodled? can we have doodled? can you have doodled? can they have doodled?
V-ing perfect
can I have been doodling? can you have been doodling? can he have been doodling? can we have been doodling? can you have been doodling? can they have been doodling?
Interro-negative form
Simple form
can I not doodle? can you not doodle? can he not doodle? can we not doodle? can you not doodle? can they not doodle?
V-ing form
can I not be doodling? can you not be doodling? can he not be doodling? can we not be doodling? can you not be doodling? can they not be doodling?
Perfect
can I not have doodled? can you not have doodled? can he not have doodled? can we not have doodled? can you not have doodled? can they not have doodled?
V-ing perfect
can I not have been doodling? can you not have been doodling? can he not have been doodling? can we not have been doodling? can you not have been doodling? can they not have been doodling?