could water
Regular verb: water - watered- watered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could water
you could water
she could water
we could water
you could water
they could water 	I could be watering
you could be watering
she could be watering
we could be watering
you could be watering
they could be watering	I could have watered
you could have watered
she could have watered
we could have watered
you could have watered
they could have watered	I could have been watering
you could have been watering
she could have been watering
we could have been watering
you could have been watering
they could have been watering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't water
you couldn't water
she couldn't water
we couldn't water
you couldn't water
they couldn't water 	I couldn't be watering
you couldn't be watering
she couldn't be watering
we couldn't be watering
you couldn't be watering
they couldn't be watering	I couldn't have watered
you couldn't have watered
she couldn't have watered
we couldn't have watered
you couldn't have watered
they couldn't have watered	I couldn't have been watering
you couldn't have been watering
she couldn't have been watering
we couldn't have been watering
you couldn't have been watering
they couldn't have been watering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I water?
could you water?
could she water?
could we water?
could you water?
could they water? 	could I be watering?
could you be watering?
could she be watering?
could we be watering?
could you be watering?
could they be watering? 	could I have watered?
could you have watered?
could she have watered?
could we have watered?
could you have watered?
could they have watered? 	could I have been watering?
could you have been watering?
could she have been watering?
could we have been watering?
could you have been watering?
could they have been watering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I water?
couldn't you water?
couldn't she water?
couldn't we water?
couldn't you water?
couldn't they water? 	couldn't I be watering?
couldn't you be watering?
couldn't she be watering?
couldn't we be watering?
couldn't you be watering?
couldn't they be watering? 	couldn't I have watered?
couldn't you have watered?
couldn't she have watered?
couldn't we have watered?
couldn't you have watered?
couldn't they have watered? 	couldn't I have been watering?
couldn't you have been watering?
couldn't she have been watering?
couldn't we have been watering?
couldn't you have been watering?
couldn't they have been watering?