I could dehydrate you could dehydrate he could dehydrate we could dehydrate you could dehydrate they could dehydrate
V-ing form
I could be dehydrating you could be dehydrating he could be dehydrating we could be dehydrating you could be dehydrating they could be dehydrating
Perfect
I could have dehydrated you could have dehydrated he could have dehydrated we could have dehydrated you could have dehydrated they could have dehydrated
V-ing perfect
I could have been dehydrating you could have been dehydrating he could have been dehydrating we could have been dehydrating you could have been dehydrating they could have been dehydrating
Negation
Simple form
I could not dehydrate you could not dehydrate he could not dehydrate we could not dehydrate you could not dehydrate they could not dehydrate
V-ing form
I could not be dehydrating you could not be dehydrating he could not be dehydrating we could not be dehydrating you could not be dehydrating they could not be dehydrating
Perfect
I could not have dehydrated you could not have dehydrated he could not have dehydrated we could not have dehydrated you could not have dehydrated they could not have dehydrated
V-ing perfect
I could not have been dehydrating you could not have been dehydrating he could not have been dehydrating we could not have been dehydrating you could not have been dehydrating they could not have been dehydrating
Interrogative form
Simple form
could I dehydrate? could you dehydrate? could he dehydrate? could we dehydrate? could you dehydrate? could they dehydrate?
V-ing form
could I be dehydrating? could you be dehydrating? could he be dehydrating? could we be dehydrating? could you be dehydrating? could they be dehydrating?
Perfect
could I have dehydrated? could you have dehydrated? could he have dehydrated? could we have dehydrated? could you have dehydrated? could they have dehydrated?
V-ing perfect
could I have been dehydrating? could you have been dehydrating? could he have been dehydrating? could we have been dehydrating? could you have been dehydrating? could they have been dehydrating?
Interro-negative form
Simple form
could I not dehydrate? could you not dehydrate? could he not dehydrate? could we not dehydrate? could you not dehydrate? could they not dehydrate?
V-ing form
could I not be dehydrating? could you not be dehydrating? could he not be dehydrating? could we not be dehydrating? could you not be dehydrating? could they not be dehydrating?
Perfect
could I not have dehydrated? could you not have dehydrated? could he not have dehydrated? could we not have dehydrated? could you not have dehydrated? could they not have dehydrated?
V-ing perfect
could I not have been dehydrating? could you not have been dehydrating? could he not have been dehydrating? could we not have been dehydrating? could you not have been dehydrating? could they not have been dehydrating?