I could cross-section you could cross-section she could cross-section we could cross-section you could cross-section they could cross-section
V-ing form
I could be cross-sectioning you could be cross-sectioning she could be cross-sectioning we could be cross-sectioning you could be cross-sectioning they could be cross-sectioning
Perfect
I could have cross-sectioned you could have cross-sectioned she could have cross-sectioned we could have cross-sectioned you could have cross-sectioned they could have cross-sectioned
V-ing perfect
I could have been cross-sectioning you could have been cross-sectioning she could have been cross-sectioning we could have been cross-sectioning you could have been cross-sectioning they could have been cross-sectioning
Negation
Simple form
I could not cross-section you could not cross-section she could not cross-section we could not cross-section you could not cross-section they could not cross-section
V-ing form
I could not be cross-sectioning you could not be cross-sectioning she could not be cross-sectioning we could not be cross-sectioning you could not be cross-sectioning they could not be cross-sectioning
Perfect
I could not have cross-sectioned you could not have cross-sectioned she could not have cross-sectioned we could not have cross-sectioned you could not have cross-sectioned they could not have cross-sectioned
V-ing perfect
I could not have been cross-sectioning you could not have been cross-sectioning she could not have been cross-sectioning we could not have been cross-sectioning you could not have been cross-sectioning they could not have been cross-sectioning
Interrogative form
Simple form
could I cross-section? could you cross-section? could she cross-section? could we cross-section? could you cross-section? could they cross-section?
V-ing form
could I be cross-sectioning? could you be cross-sectioning? could she be cross-sectioning? could we be cross-sectioning? could you be cross-sectioning? could they be cross-sectioning?
Perfect
could I have cross-sectioned? could you have cross-sectioned? could she have cross-sectioned? could we have cross-sectioned? could you have cross-sectioned? could they have cross-sectioned?
V-ing perfect
could I have been cross-sectioning? could you have been cross-sectioning? could she have been cross-sectioning? could we have been cross-sectioning? could you have been cross-sectioning? could they have been cross-sectioning?
Interro-negative form
Simple form
could I not cross-section? could you not cross-section? could she not cross-section? could we not cross-section? could you not cross-section? could they not cross-section?
V-ing form
could I not be cross-sectioning? could you not be cross-sectioning? could she not be cross-sectioning? could we not be cross-sectioning? could you not be cross-sectioning? could they not be cross-sectioning?
Perfect
could I not have cross-sectioned? could you not have cross-sectioned? could she not have cross-sectioned? could we not have cross-sectioned? could you not have cross-sectioned? could they not have cross-sectioned?
V-ing perfect
could I not have been cross-sectioning? could you not have been cross-sectioning? could she not have been cross-sectioning? could we not have been cross-sectioning? could you not have been cross-sectioning? could they not have been cross-sectioning?