I could dehydrogenate you could dehydrogenate he could dehydrogenate we could dehydrogenate you could dehydrogenate they could dehydrogenate
V-ing form
I could be dehydrogenating you could be dehydrogenating he could be dehydrogenating we could be dehydrogenating you could be dehydrogenating they could be dehydrogenating
Perfect
I could have dehydrogenated you could have dehydrogenated he could have dehydrogenated we could have dehydrogenated you could have dehydrogenated they could have dehydrogenated
V-ing perfect
I could have been dehydrogenating you could have been dehydrogenating he could have been dehydrogenating we could have been dehydrogenating you could have been dehydrogenating they could have been dehydrogenating
Negation
Simple form
I could not dehydrogenate you could not dehydrogenate he could not dehydrogenate we could not dehydrogenate you could not dehydrogenate they could not dehydrogenate
V-ing form
I could not be dehydrogenating you could not be dehydrogenating he could not be dehydrogenating we could not be dehydrogenating you could not be dehydrogenating they could not be dehydrogenating
Perfect
I could not have dehydrogenated you could not have dehydrogenated he could not have dehydrogenated we could not have dehydrogenated you could not have dehydrogenated they could not have dehydrogenated
V-ing perfect
I could not have been dehydrogenating you could not have been dehydrogenating he could not have been dehydrogenating we could not have been dehydrogenating you could not have been dehydrogenating they could not have been dehydrogenating
Interrogative form
Simple form
could I dehydrogenate? could you dehydrogenate? could he dehydrogenate? could we dehydrogenate? could you dehydrogenate? could they dehydrogenate?
V-ing form
could I be dehydrogenating? could you be dehydrogenating? could he be dehydrogenating? could we be dehydrogenating? could you be dehydrogenating? could they be dehydrogenating?
Perfect
could I have dehydrogenated? could you have dehydrogenated? could he have dehydrogenated? could we have dehydrogenated? could you have dehydrogenated? could they have dehydrogenated?
V-ing perfect
could I have been dehydrogenating? could you have been dehydrogenating? could he have been dehydrogenating? could we have been dehydrogenating? could you have been dehydrogenating? could they have been dehydrogenating?
Interro-negative form
Simple form
could I not dehydrogenate? could you not dehydrogenate? could he not dehydrogenate? could we not dehydrogenate? could you not dehydrogenate? could they not dehydrogenate?
V-ing form
could I not be dehydrogenating? could you not be dehydrogenating? could he not be dehydrogenating? could we not be dehydrogenating? could you not be dehydrogenating? could they not be dehydrogenating?
Perfect
could I not have dehydrogenated? could you not have dehydrogenated? could he not have dehydrogenated? could we not have dehydrogenated? could you not have dehydrogenated? could they not have dehydrogenated?
V-ing perfect
could I not have been dehydrogenating? could you not have been dehydrogenating? could he not have been dehydrogenating? could we not have been dehydrogenating? could you not have been dehydrogenating? could they not have been dehydrogenating?