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