I could compel you could compel he could compel we could compel you could compel they could compel
V-ing form
I could be compelling you could be compelling he could be compelling we could be compelling you could be compelling they could be compelling
Perfect
I could have compelled you could have compelled he could have compelled we could have compelled you could have compelled they could have compelled
V-ing perfect
I could have been compelling you could have been compelling he could have been compelling we could have been compelling you could have been compelling they could have been compelling
Negation
Simple form
I couldn't compel you couldn't compel he couldn't compel we couldn't compel you couldn't compel they couldn't compel
V-ing form
I couldn't be compelling you couldn't be compelling he couldn't be compelling we couldn't be compelling you couldn't be compelling they couldn't be compelling
Perfect
I couldn't have compelled you couldn't have compelled he couldn't have compelled we couldn't have compelled you couldn't have compelled they couldn't have compelled
V-ing perfect
I couldn't have been compelling you couldn't have been compelling he couldn't have been compelling we couldn't have been compelling you couldn't have been compelling they couldn't have been compelling
Interrogative form
Simple form
could I compel? could you compel? could he compel? could we compel? could you compel? could they compel?
V-ing form
could I be compelling? could you be compelling? could he be compelling? could we be compelling? could you be compelling? could they be compelling?
Perfect
could I have compelled? could you have compelled? could he have compelled? could we have compelled? could you have compelled? could they have compelled?
V-ing perfect
could I have been compelling? could you have been compelling? could he have been compelling? could we have been compelling? could you have been compelling? could they have been compelling?
Interro-negative form
Simple form
couldn't I compel? couldn't you compel? couldn't he compel? couldn't we compel? couldn't you compel? couldn't they compel?
V-ing form
couldn't I be compelling? couldn't you be compelling? couldn't he be compelling? couldn't we be compelling? couldn't you be compelling? couldn't they be compelling?
Perfect
couldn't I have compelled? couldn't you have compelled? couldn't he have compelled? couldn't we have compelled? couldn't you have compelled? couldn't they have compelled?
V-ing perfect
couldn't I have been compelling? couldn't you have been compelling? couldn't he have been compelling? couldn't we have been compelling? couldn't you have been compelling? couldn't they have been compelling?