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