Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could woolr you could woolr he could woolr we could woolr you could woolr they could woolr
V-ing form
I could be woolring you could be woolring he could be woolring we could be woolring you could be woolring they could be woolring
Perfect
I could have woolred you could have woolred he could have woolred we could have woolred you could have woolred they could have woolred
V-ing perfect
I could have been woolring you could have been woolring he could have been woolring we could have been woolring you could have been woolring they could have been woolring
Negation
Simple form
I could not woolr you could not woolr he could not woolr we could not woolr you could not woolr they could not woolr
V-ing form
I could not be woolring you could not be woolring he could not be woolring we could not be woolring you could not be woolring they could not be woolring
Perfect
I could not have woolred you could not have woolred he could not have woolred we could not have woolred you could not have woolred they could not have woolred
V-ing perfect
I could not have been woolring you could not have been woolring he could not have been woolring we could not have been woolring you could not have been woolring they could not have been woolring
Interrogative form
Simple form
could I woolr? could you woolr? could he woolr? could we woolr? could you woolr? could they woolr?
V-ing form
could I be woolring? could you be woolring? could he be woolring? could we be woolring? could you be woolring? could they be woolring?
Perfect
could I have woolred? could you have woolred? could he have woolred? could we have woolred? could you have woolred? could they have woolred?
V-ing perfect
could I have been woolring? could you have been woolring? could he have been woolring? could we have been woolring? could you have been woolring? could they have been woolring?
Interro-negative form
Simple form
could I not woolr? could you not woolr? could he not woolr? could we not woolr? could you not woolr? could they not woolr?
V-ing form
could I not be woolring? could you not be woolring? could he not be woolring? could we not be woolring? could you not be woolring? could they not be woolring?
Perfect
could I not have woolred? could you not have woolred? could he not have woolred? could we not have woolred? could you not have woolred? could they not have woolred?
V-ing perfect
could I not have been woolring? could you not have been woolring? could he not have been woolring? could we not have been woolring? could you not have been woolring? could they not have been woolring?