can exert
Regular verb: exert - exerted- exerted

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