could rehydrate
Regular verb: rehydrate - rehydrated- rehydrated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could rehydrate
you could rehydrate
he could rehydrate
we could rehydrate
you could rehydrate
they could rehydrate 	I could be rehydrating
you could be rehydrating
he could be rehydrating
we could be rehydrating
you could be rehydrating
they could be rehydrating	I could have rehydrated
you could have rehydrated
he could have rehydrated
we could have rehydrated
you could have rehydrated
they could have rehydrated	I could have been rehydrating
you could have been rehydrating
he could have been rehydrating
we could have been rehydrating
you could have been rehydrating
they could have been rehydrating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't rehydrate
you couldn't rehydrate
he couldn't rehydrate
we couldn't rehydrate
you couldn't rehydrate
they couldn't rehydrate 	I couldn't be rehydrating
you couldn't be rehydrating
he couldn't be rehydrating
we couldn't be rehydrating
you couldn't be rehydrating
they couldn't be rehydrating	I couldn't have rehydrated
you couldn't have rehydrated
he couldn't have rehydrated
we couldn't have rehydrated
you couldn't have rehydrated
they couldn't have rehydrated	I couldn't have been rehydrating
you couldn't have been rehydrating
he couldn't have been rehydrating
we couldn't have been rehydrating
you couldn't have been rehydrating
they couldn't have been rehydrating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I rehydrate?
could you rehydrate?
could he rehydrate?
could we rehydrate?
could you rehydrate?
could they rehydrate? 	could I be rehydrating?
could you be rehydrating?
could he be rehydrating?
could we be rehydrating?
could you be rehydrating?
could they be rehydrating? 	could I have rehydrated?
could you have rehydrated?
could he have rehydrated?
could we have rehydrated?
could you have rehydrated?
could they have rehydrated? 	could I have been rehydrating?
could you have been rehydrating?
could he have been rehydrating?
could we have been rehydrating?
could you have been rehydrating?
could they have been rehydrating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I rehydrate?
couldn't you rehydrate?
couldn't he rehydrate?
couldn't we rehydrate?
couldn't you rehydrate?
couldn't they rehydrate? 	couldn't I be rehydrating?
couldn't you be rehydrating?
couldn't he be rehydrating?
couldn't we be rehydrating?
couldn't you be rehydrating?
couldn't they be rehydrating? 	couldn't I have rehydrated?
couldn't you have rehydrated?
couldn't he have rehydrated?
couldn't we have rehydrated?
couldn't you have rehydrated?
couldn't they have rehydrated? 	couldn't I have been rehydrating?
couldn't you have been rehydrating?
couldn't he have been rehydrating?
couldn't we have been rehydrating?
couldn't you have been rehydrating?
couldn't they have been rehydrating?