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 cannot exert you cannot exert he cannot exert we cannot exert you cannot exert they cannot exert	I cannot be exerting you cannot be exerting he cannot be exerting we cannot be exerting you cannot be exerting they cannot be exerting
Perfect	V-ing perfect
I cannot have exerted you cannot have exerted he cannot have exerted we cannot have exerted you cannot have exerted they cannot have exerted	I cannot have been exerting you cannot have been exerting he cannot have been exerting we cannot have been exerting you cannot have been exerting they cannot 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 I not exert? can you not exert? can he not exert? can we not exert? can you not exert? can they not exert?	can I not be exerting? can you not be exerting? can he not be exerting? can we not be exerting? can you not be exerting? can they not be exerting?
Perfect	V-ing perfect
can I not have exerted? can you not have exerted? can he not have exerted? can we not have exerted? can you not have exerted? can they not have exerted?	can I not have been exerting? can you not have been exerting? can he not have been exerting? can we not have been exerting? can you not have been exerting? can they not have been exerting?