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