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