I could doggone you could doggone he could doggone we could doggone you could doggone they could doggone
V-ing form
I could be doggoning you could be doggoning he could be doggoning we could be doggoning you could be doggoning they could be doggoning
Perfect
I could have doggoned you could have doggoned he could have doggoned we could have doggoned you could have doggoned they could have doggoned
V-ing perfect
I could have been doggoning you could have been doggoning he could have been doggoning we could have been doggoning you could have been doggoning they could have been doggoning
Negation
Simple form
I could not doggone you could not doggone he could not doggone we could not doggone you could not doggone they could not doggone
V-ing form
I could not be doggoning you could not be doggoning he could not be doggoning we could not be doggoning you could not be doggoning they could not be doggoning
Perfect
I could not have doggoned you could not have doggoned he could not have doggoned we could not have doggoned you could not have doggoned they could not have doggoned
V-ing perfect
I could not have been doggoning you could not have been doggoning he could not have been doggoning we could not have been doggoning you could not have been doggoning they could not have been doggoning
Interrogative form
Simple form
could I doggone? could you doggone? could he doggone? could we doggone? could you doggone? could they doggone?
V-ing form
could I be doggoning? could you be doggoning? could he be doggoning? could we be doggoning? could you be doggoning? could they be doggoning?
Perfect
could I have doggoned? could you have doggoned? could he have doggoned? could we have doggoned? could you have doggoned? could they have doggoned?
V-ing perfect
could I have been doggoning? could you have been doggoning? could he have been doggoning? could we have been doggoning? could you have been doggoning? could they have been doggoning?
Interro-negative form
Simple form
could I not doggone? could you not doggone? could he not doggone? could we not doggone? could you not doggone? could they not doggone?
V-ing form
could I not be doggoning? could you not be doggoning? could he not be doggoning? could we not be doggoning? could you not be doggoning? could they not be doggoning?
Perfect
could I not have doggoned? could you not have doggoned? could he not have doggoned? could we not have doggoned? could you not have doggoned? could they not have doggoned?
V-ing perfect
could I not have been doggoning? could you not have been doggoning? could he not have been doggoning? could we not have been doggoning? could you not have been doggoning? could they not have been doggoning?