I could flatter you could flatter he could flatter we could flatter you could flatter they could flatter
V-ing form
I could be flattering you could be flattering he could be flattering we could be flattering you could be flattering they could be flattering
Perfect
I could have flattered you could have flattered he could have flattered we could have flattered you could have flattered they could have flattered
V-ing perfect
I could have been flattering you could have been flattering he could have been flattering we could have been flattering you could have been flattering they could have been flattering
Negation
Simple form
I could not flatter you could not flatter he could not flatter we could not flatter you could not flatter they could not flatter
V-ing form
I could not be flattering you could not be flattering he could not be flattering we could not be flattering you could not be flattering they could not be flattering
Perfect
I could not have flattered you could not have flattered he could not have flattered we could not have flattered you could not have flattered they could not have flattered
V-ing perfect
I could not have been flattering you could not have been flattering he could not have been flattering we could not have been flattering you could not have been flattering they could not have been flattering
Interrogative form
Simple form
could I flatter? could you flatter? could he flatter? could we flatter? could you flatter? could they flatter?
V-ing form
could I be flattering? could you be flattering? could he be flattering? could we be flattering? could you be flattering? could they be flattering?
Perfect
could I have flattered? could you have flattered? could he have flattered? could we have flattered? could you have flattered? could they have flattered?
V-ing perfect
could I have been flattering? could you have been flattering? could he have been flattering? could we have been flattering? could you have been flattering? could they have been flattering?
Interro-negative form
Simple form
could I not flatter? could you not flatter? could he not flatter? could we not flatter? could you not flatter? could they not flatter?
V-ing form
could I not be flattering? could you not be flattering? could he not be flattering? could we not be flattering? could you not be flattering? could they not be flattering?
Perfect
could I not have flattered? could you not have flattered? could he not have flattered? could we not have flattered? could you not have flattered? could they not have flattered?
V-ing perfect
could I not have been flattering? could you not have been flattering? could he not have been flattering? could we not have been flattering? could you not have been flattering? could they not have been flattering?