could repel
Regular verb: repel - repelled- repelled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could repel
you could repel
she could repel
we could repel
you could repel
they could repel 	I could be repelling
you could be repelling
she could be repelling
we could be repelling
you could be repelling
they could be repelling	I could have repelled
you could have repelled
she could have repelled
we could have repelled
you could have repelled
they could have repelled	I could have been repelling
you could have been repelling
she could have been repelling
we could have been repelling
you could have been repelling
they could have been repelling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't repel
you couldn't repel
she couldn't repel
we couldn't repel
you couldn't repel
they couldn't repel 	I couldn't be repelling
you couldn't be repelling
she couldn't be repelling
we couldn't be repelling
you couldn't be repelling
they couldn't be repelling	I couldn't have repelled
you couldn't have repelled
she couldn't have repelled
we couldn't have repelled
you couldn't have repelled
they couldn't have repelled	I couldn't have been repelling
you couldn't have been repelling
she couldn't have been repelling
we couldn't have been repelling
you couldn't have been repelling
they couldn't have been repelling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I repel?
could you repel?
could she repel?
could we repel?
could you repel?
could they repel? 	could I be repelling?
could you be repelling?
could she be repelling?
could we be repelling?
could you be repelling?
could they be repelling? 	could I have repelled?
could you have repelled?
could she have repelled?
could we have repelled?
could you have repelled?
could they have repelled? 	could I have been repelling?
could you have been repelling?
could she have been repelling?
could we have been repelling?
could you have been repelling?
could they have been repelling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I repel?
couldn't you repel?
couldn't she repel?
couldn't we repel?
couldn't you repel?
couldn't they repel? 	couldn't I be repelling?
couldn't you be repelling?
couldn't she be repelling?
couldn't we be repelling?
couldn't you be repelling?
couldn't they be repelling? 	couldn't I have repelled?
couldn't you have repelled?
couldn't she have repelled?
couldn't we have repelled?
couldn't you have repelled?
couldn't they have repelled? 	couldn't I have been repelling?
couldn't you have been repelling?
couldn't she have been repelling?
couldn't we have been repelling?
couldn't you have been repelling?
couldn't they have been repelling?