I could water-cool you could water-cool she could water-cool we could water-cool you could water-cool they could water-cool
V-ing form
I could be water-cooling you could be water-cooling she could be water-cooling we could be water-cooling you could be water-cooling they could be water-cooling
Perfect
I could have water-cooled you could have water-cooled she could have water-cooled we could have water-cooled you could have water-cooled they could have water-cooled
V-ing perfect
I could have been water-cooling you could have been water-cooling she could have been water-cooling we could have been water-cooling you could have been water-cooling they could have been water-cooling
Negation
Simple form
I couldn't water-cool you couldn't water-cool she couldn't water-cool we couldn't water-cool you couldn't water-cool they couldn't water-cool
V-ing form
I couldn't be water-cooling you couldn't be water-cooling she couldn't be water-cooling we couldn't be water-cooling you couldn't be water-cooling they couldn't be water-cooling
Perfect
I couldn't have water-cooled you couldn't have water-cooled she couldn't have water-cooled we couldn't have water-cooled you couldn't have water-cooled they couldn't have water-cooled
V-ing perfect
I couldn't have been water-cooling you couldn't have been water-cooling she couldn't have been water-cooling we couldn't have been water-cooling you couldn't have been water-cooling they couldn't have been water-cooling
Interrogative form
Simple form
could I water-cool? could you water-cool? could she water-cool? could we water-cool? could you water-cool? could they water-cool?
V-ing form
could I be water-cooling? could you be water-cooling? could she be water-cooling? could we be water-cooling? could you be water-cooling? could they be water-cooling?
Perfect
could I have water-cooled? could you have water-cooled? could she have water-cooled? could we have water-cooled? could you have water-cooled? could they have water-cooled?
V-ing perfect
could I have been water-cooling? could you have been water-cooling? could she have been water-cooling? could we have been water-cooling? could you have been water-cooling? could they have been water-cooling?
Interro-negative form
Simple form
couldn't I water-cool? couldn't you water-cool? couldn't she water-cool? couldn't we water-cool? couldn't you water-cool? couldn't they water-cool?
V-ing form
couldn't I be water-cooling? couldn't you be water-cooling? couldn't she be water-cooling? couldn't we be water-cooling? couldn't you be water-cooling? couldn't they be water-cooling?
Perfect
couldn't I have water-cooled? couldn't you have water-cooled? couldn't she have water-cooled? couldn't we have water-cooled? couldn't you have water-cooled? couldn't they have water-cooled?
V-ing perfect
couldn't I have been water-cooling? couldn't you have been water-cooling? couldn't she have been water-cooling? couldn't we have been water-cooling? couldn't you have been water-cooling? couldn't they have been water-cooling?