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