I can repel you can repel she can repel we can repel you can repel they can repel
V-ing form
I can be repelling you can be repelling she can be repelling we can be repelling you can be repelling they can be repelling
Perfect
I can have repelled you can have repelled she can have repelled we can have repelled you can have repelled they can have repelled
V-ing perfect
I can have been repelling you can have been repelling she can have been repelling we can have been repelling you can have been repelling they can have been repelling
Negation
Simple form
I cannot repel you cannot repel she cannot repel we cannot repel you cannot repel they cannot repel
V-ing form
I cannot be repelling you cannot be repelling she cannot be repelling we cannot be repelling you cannot be repelling they cannot be repelling
Perfect
I cannot have repelled you cannot have repelled she cannot have repelled we cannot have repelled you cannot have repelled they cannot have repelled
V-ing perfect
I cannot have been repelling you cannot have been repelling she cannot have been repelling we cannot have been repelling you cannot have been repelling they cannot have been repelling
Interrogative form
Simple form
can I repel? can you repel? can she repel? can we repel? can you repel? can they repel?
V-ing form
can I be repelling? can you be repelling? can she be repelling? can we be repelling? can you be repelling? can they be repelling?
Perfect
can I have repelled? can you have repelled? can she have repelled? can we have repelled? can you have repelled? can they have repelled?
V-ing perfect
can I have been repelling? can you have been repelling? can she have been repelling? can we have been repelling? can you have been repelling? can they have been repelling?
Interro-negative form
Simple form
can I not repel? can you not repel? can she not repel? can we not repel? can you not repel? can they not repel?
V-ing form
can I not be repelling? can you not be repelling? can she not be repelling? can we not be repelling? can you not be repelling? can they not be repelling?
Perfect
can I not have repelled? can you not have repelled? can she not have repelled? can we not have repelled? can you not have repelled? can they not have repelled?
V-ing perfect
can I not have been repelling? can you not have been repelling? can she not have been repelling? can we not have been repelling? can you not have been repelling? can they not have been repelling?