I could mastermind you could mastermind he could mastermind we could mastermind you could mastermind they could mastermind
V-ing form
I could be masterminding you could be masterminding he could be masterminding we could be masterminding you could be masterminding they could be masterminding
Perfect
I could have masterminded you could have masterminded he could have masterminded we could have masterminded you could have masterminded they could have masterminded
V-ing perfect
I could have been masterminding you could have been masterminding he could have been masterminding we could have been masterminding you could have been masterminding they could have been masterminding
Negation
Simple form
I could not mastermind you could not mastermind he could not mastermind we could not mastermind you could not mastermind they could not mastermind
V-ing form
I could not be masterminding you could not be masterminding he could not be masterminding we could not be masterminding you could not be masterminding they could not be masterminding
Perfect
I could not have masterminded you could not have masterminded he could not have masterminded we could not have masterminded you could not have masterminded they could not have masterminded
V-ing perfect
I could not have been masterminding you could not have been masterminding he could not have been masterminding we could not have been masterminding you could not have been masterminding they could not have been masterminding
Interrogative form
Simple form
could I mastermind? could you mastermind? could he mastermind? could we mastermind? could you mastermind? could they mastermind?
V-ing form
could I be masterminding? could you be masterminding? could he be masterminding? could we be masterminding? could you be masterminding? could they be masterminding?
Perfect
could I have masterminded? could you have masterminded? could he have masterminded? could we have masterminded? could you have masterminded? could they have masterminded?
V-ing perfect
could I have been masterminding? could you have been masterminding? could he have been masterminding? could we have been masterminding? could you have been masterminding? could they have been masterminding?
Interro-negative form
Simple form
could I not mastermind? could you not mastermind? could he not mastermind? could we not mastermind? could you not mastermind? could they not mastermind?
V-ing form
could I not be masterminding? could you not be masterminding? could he not be masterminding? could we not be masterminding? could you not be masterminding? could they not be masterminding?
Perfect
could I not have masterminded? could you not have masterminded? could he not have masterminded? could we not have masterminded? could you not have masterminded? could they not have masterminded?
V-ing perfect
could I not have been masterminding? could you not have been masterminding? could he not have been masterminding? could we not have been masterminding? could you not have been masterminding? could they not have been masterminding?