Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could water. rinse you could water. rinse he could water. rinse we could water. rinse you could water. rinse they could water. rinse
V-ing form
I could be water. rinsing you could be water. rinsing he could be water. rinsing we could be water. rinsing you could be water. rinsing they could be water. rinsing
Perfect
I could have water. rinsed you could have water. rinsed he could have water. rinsed we could have water. rinsed you could have water. rinsed they could have water. rinsed
V-ing perfect
I could have been water. rinsing you could have been water. rinsing he could have been water. rinsing we could have been water. rinsing you could have been water. rinsing they could have been water. rinsing
Negation
Simple form
I couldn't water. rinse you couldn't water. rinse he couldn't water. rinse we couldn't water. rinse you couldn't water. rinse they couldn't water. rinse
V-ing form
I couldn't be water. rinsing you couldn't be water. rinsing he couldn't be water. rinsing we couldn't be water. rinsing you couldn't be water. rinsing they couldn't be water. rinsing
Perfect
I couldn't have water. rinsed you couldn't have water. rinsed he couldn't have water. rinsed we couldn't have water. rinsed you couldn't have water. rinsed they couldn't have water. rinsed
V-ing perfect
I couldn't have been water. rinsing you couldn't have been water. rinsing he couldn't have been water. rinsing we couldn't have been water. rinsing you couldn't have been water. rinsing they couldn't have been water. rinsing
Interrogative form
Simple form
could I water. rinse? could you water. rinse? could he water. rinse? could we water. rinse? could you water. rinse? could they water. rinse?
V-ing form
could I be water. rinsing? could you be water. rinsing? could he be water. rinsing? could we be water. rinsing? could you be water. rinsing? could they be water. rinsing?
Perfect
could I have water. rinsed? could you have water. rinsed? could he have water. rinsed? could we have water. rinsed? could you have water. rinsed? could they have water. rinsed?
V-ing perfect
could I have been water. rinsing? could you have been water. rinsing? could he have been water. rinsing? could we have been water. rinsing? could you have been water. rinsing? could they have been water. rinsing?
Interro-negative form
Simple form
couldn't I water. rinse? couldn't you water. rinse? couldn't he water. rinse? couldn't we water. rinse? couldn't you water. rinse? couldn't they water. rinse?
V-ing form
couldn't I be water. rinsing? couldn't you be water. rinsing? couldn't he be water. rinsing? couldn't we be water. rinsing? couldn't you be water. rinsing? couldn't they be water. rinsing?
Perfect
couldn't I have water. rinsed? couldn't you have water. rinsed? couldn't he have water. rinsed? couldn't we have water. rinsed? couldn't you have water. rinsed? couldn't they have water. rinsed?
V-ing perfect
couldn't I have been water. rinsing? couldn't you have been water. rinsing? couldn't he have been water. rinsing? couldn't we have been water. rinsing? couldn't you have been water. rinsing? couldn't they have been water. rinsing?