can glower
Regular verb: glower - glowered- glowered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can glower
you can glower
she can glower
we can glower
you can glower
they can glower 	I can be glowering
you can be glowering
she can be glowering
we can be glowering
you can be glowering
they can be glowering	I can have glowered
you can have glowered
she can have glowered
we can have glowered
you can have glowered
they can have glowered	I can have been glowering
you can have been glowering
she can have been glowering
we can have been glowering
you can have been glowering
they can have been glowering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot glower
you cannot glower
she cannot glower
we cannot glower
you cannot glower
they cannot glower 	I cannot be glowering
you cannot be glowering
she cannot be glowering
we cannot be glowering
you cannot be glowering
they cannot be glowering	I cannot have glowered
you cannot have glowered
she cannot have glowered
we cannot have glowered
you cannot have glowered
they cannot have glowered	I cannot have been glowering
you cannot have been glowering
she cannot have been glowering
we cannot have been glowering
you cannot have been glowering
they cannot have been glowering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I glower?
can you glower?
can she glower?
can we glower?
can you glower?
can they glower? 	can I be glowering?
can you be glowering?
can she be glowering?
can we be glowering?
can you be glowering?
can they be glowering? 	can I have glowered?
can you have glowered?
can she have glowered?
can we have glowered?
can you have glowered?
can they have glowered? 	can I have been glowering?
can you have been glowering?
can she have been glowering?
can we have been glowering?
can you have been glowering?
can they have been glowering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not glower?
can you not glower?
can she not glower?
can we not glower?
can you not glower?
can they not glower? 	can I not be glowering?
can you not be glowering?
can she not be glowering?
can we not be glowering?
can you not be glowering?
can they not be glowering? 	can I not have glowered?
can you not have glowered?
can she not have glowered?
can we not have glowered?
can you not have glowered?
can they not have glowered? 	can I not have been glowering?
can you not have been glowering?
can she not have been glowering?
can we not have been glowering?
can you not have been glowering?
can they not have been glowering?