I can repel you can repel he can repel we can repel you can repel they can repel
V-ing form
I can be repelling you can be repelling he can be repelling we can be repelling you can be repelling they can be repelling
Perfect
I can have repelled you can have repelled he 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 he can have been repelling we can have been repelling you can have been repelling they can have been repelling
Negation
Simple form
I can't repel you can't repel he can't repel we can't repel you can't repel they can't repel
V-ing form
I can't be repelling you can't be repelling he can't be repelling we can't be repelling you can't be repelling they can't be repelling
Perfect
I can't have repelled you can't have repelled he can't have repelled we can't have repelled you can't have repelled they can't have repelled
V-ing perfect
I can't have been repelling you can't have been repelling he can't have been repelling we can't have been repelling you can't have been repelling they can't have been repelling
Interrogative form
Simple form
can I repel? can you repel? can he repel? can we repel? can you repel? can they repel?
V-ing form
can I be repelling? can you be repelling? can he be repelling? can we be repelling? can you be repelling? can they be repelling?
Perfect
can I have repelled? can you have repelled? can he 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 he have been repelling? can we have been repelling? can you have been repelling? can they have been repelling?
Interro-negative form
Simple form
can't I repel? can't you repel? can't he repel? can't we repel? can't you repel? can't they repel?
V-ing form
can't I be repelling? can't you be repelling? can't he be repelling? can't we be repelling? can't you be repelling? can't they be repelling?
Perfect
can't I have repelled? can't you have repelled? can't he have repelled? can't we have repelled? can't you have repelled? can't they have repelled?
V-ing perfect
can't I have been repelling? can't you have been repelling? can't he have been repelling? can't we have been repelling? can't you have been repelling? can't they have been repelling?