English verb conjugation
COULD WATER

Regular verb: water - watered - watered

Affirmation

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