English verb conjugation
CAN BRUSH

Regular verb: brush - brushed - brushed

Affirmation

Simple form	V-ing form
I can brush you can brush she can brush we can brush you can brush they can brush	I can be brushing you can be brushing she can be brushing we can be brushing you can be brushing they can be brushing
Perfect	V-ing perfect
I can have brushed you can have brushed she can have brushed we can have brushed you can have brushed they can have brushed	I can have been brushing you can have been brushing she can have been brushing we can have been brushing you can have been brushing they can have been brushing

Negation

Simple form	V-ing form
I can't brush you can't brush she can't brush we can't brush you can't brush they can't brush	I can't be brushing you can't be brushing she can't be brushing we can't be brushing you can't be brushing they can't be brushing
Perfect	V-ing perfect
I can't have brushed you can't have brushed she can't have brushed we can't have brushed you can't have brushed they can't have brushed	I can't have been brushing you can't have been brushing she can't have been brushing we can't have been brushing you can't have been brushing they can't have been brushing

Interrogative form

Simple form	V-ing form
can I brush? can you brush? can she brush? can we brush? can you brush? can they brush?	can I be brushing? can you be brushing? can she be brushing? can we be brushing? can you be brushing? can they be brushing?
Perfect	V-ing perfect
can I have brushed? can you have brushed? can she have brushed? can we have brushed? can you have brushed? can they have brushed?	can I have been brushing? can you have been brushing? can she have been brushing? can we have been brushing? can you have been brushing? can they have been brushing?

Interro-negative form

Simple form	V-ing form
can't I brush? can't you brush? can't she brush? can't we brush? can't you brush? can't they brush?	can't I be brushing? can't you be brushing? can't she be brushing? can't we be brushing? can't you be brushing? can't they be brushing?
Perfect	V-ing perfect
can't I have brushed? can't you have brushed? can't she have brushed? can't we have brushed? can't you have brushed? can't they have brushed?	can't I have been brushing? can't you have been brushing? can't she have been brushing? can't we have been brushing? can't you have been brushing? can't they have been brushing?