English verb conjugation
CAN DROWSE

Regular verb: drowse - drowsed - drowsed

Affirmation

Simple form	V-ing form
I can drowse you can drowse she can drowse we can drowse you can drowse they can drowse	I can be drowsing you can be drowsing she can be drowsing we can be drowsing you can be drowsing they can be drowsing
Perfect	V-ing perfect
I can have drowsed you can have drowsed she can have drowsed we can have drowsed you can have drowsed they can have drowsed	I can have been drowsing you can have been drowsing she can have been drowsing we can have been drowsing you can have been drowsing they can have been drowsing

Negation

Simple form	V-ing form
I can't drowse you can't drowse she can't drowse we can't drowse you can't drowse they can't drowse	I can't be drowsing you can't be drowsing she can't be drowsing we can't be drowsing you can't be drowsing they can't be drowsing
Perfect	V-ing perfect
I can't have drowsed you can't have drowsed she can't have drowsed we can't have drowsed you can't have drowsed they can't have drowsed	I can't have been drowsing you can't have been drowsing she can't have been drowsing we can't have been drowsing you can't have been drowsing they can't have been drowsing

Interrogative form

Simple form	V-ing form
can I drowse? can you drowse? can she drowse? can we drowse? can you drowse? can they drowse?	can I be drowsing? can you be drowsing? can she be drowsing? can we be drowsing? can you be drowsing? can they be drowsing?
Perfect	V-ing perfect
can I have drowsed? can you have drowsed? can she have drowsed? can we have drowsed? can you have drowsed? can they have drowsed?	can I have been drowsing? can you have been drowsing? can she have been drowsing? can we have been drowsing? can you have been drowsing? can they have been drowsing?

Interro-negative form

Simple form	V-ing form
can't I drowse? can't you drowse? can't she drowse? can't we drowse? can't you drowse? can't they drowse?	can't I be drowsing? can't you be drowsing? can't she be drowsing? can't we be drowsing? can't you be drowsing? can't they be drowsing?
Perfect	V-ing perfect
can't I have drowsed? can't you have drowsed? can't she have drowsed? can't we have drowsed? can't you have drowsed? can't they have drowsed?	can't I have been drowsing? can't you have been drowsing? can't she have been drowsing? can't we have been drowsing? can't you have been drowsing? can't they have been drowsing?