English verb conjugation
CAN EXERT

Regular verb: exert - exerted - exerted

Affirmation

Simple form	V-ing form
I can exert you can exert he can exert we can exert you can exert they can exert	I can be exerting you can be exerting he can be exerting we can be exerting you can be exerting they can be exerting
Perfect	V-ing perfect
I can have exerted you can have exerted he can have exerted we can have exerted you can have exerted they can have exerted	I can have been exerting you can have been exerting he can have been exerting we can have been exerting you can have been exerting they can have been exerting

Negation

Simple form	V-ing form
I can't exert you can't exert he can't exert we can't exert you can't exert they can't exert	I can't be exerting you can't be exerting he can't be exerting we can't be exerting you can't be exerting they can't be exerting
Perfect	V-ing perfect
I can't have exerted you can't have exerted he can't have exerted we can't have exerted you can't have exerted they can't have exerted	I can't have been exerting you can't have been exerting he can't have been exerting we can't have been exerting you can't have been exerting they can't have been exerting

Interrogative form

Simple form	V-ing form
can I exert? can you exert? can he exert? can we exert? can you exert? can they exert?	can I be exerting? can you be exerting? can he be exerting? can we be exerting? can you be exerting? can they be exerting?
Perfect	V-ing perfect
can I have exerted? can you have exerted? can he have exerted? can we have exerted? can you have exerted? can they have exerted?	can I have been exerting? can you have been exerting? can he have been exerting? can we have been exerting? can you have been exerting? can they have been exerting?

Interro-negative form

Simple form	V-ing form
can't I exert? can't you exert? can't he exert? can't we exert? can't you exert? can't they exert?	can't I be exerting? can't you be exerting? can't he be exerting? can't we be exerting? can't you be exerting? can't they be exerting?
Perfect	V-ing perfect
can't I have exerted? can't you have exerted? can't he have exerted? can't we have exerted? can't you have exerted? can't they have exerted?	can't I have been exerting? can't you have been exerting? can't he have been exerting? can't we have been exerting? can't you have been exerting? can't they have been exerting?