English verb conjugation
COULD MASTERMIND

Regular verb: mastermind - masterminded - masterminded

Affirmation

Simple form	V-ing form
I could mastermind you could mastermind he could mastermind we could mastermind you could mastermind they could mastermind	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	V-ing 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	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	V-ing form
I couldn't mastermind you couldn't mastermind he couldn't mastermind we couldn't mastermind you couldn't mastermind they couldn't mastermind	I couldn't be masterminding you couldn't be masterminding he couldn't be masterminding we couldn't be masterminding you couldn't be masterminding they couldn't be masterminding
Perfect	V-ing perfect
I couldn't have masterminded you couldn't have masterminded he couldn't have masterminded we couldn't have masterminded you couldn't have masterminded they couldn't have masterminded	I couldn't have been masterminding you couldn't have been masterminding he couldn't have been masterminding we couldn't have been masterminding you couldn't have been masterminding they couldn't have been masterminding

Interrogative form

Simple form	V-ing form
could I mastermind? could you mastermind? could he mastermind? could we mastermind? could you mastermind? could they mastermind?	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	V-ing 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?	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	V-ing form
couldn't I mastermind? couldn't you mastermind? couldn't he mastermind? couldn't we mastermind? couldn't you mastermind? couldn't they mastermind?	couldn't I be masterminding? couldn't you be masterminding? couldn't he be masterminding? couldn't we be masterminding? couldn't you be masterminding? couldn't they be masterminding?
Perfect	V-ing perfect
couldn't I have masterminded? couldn't you have masterminded? couldn't he have masterminded? couldn't we have masterminded? couldn't you have masterminded? couldn't they have masterminded?	couldn't I have been masterminding? couldn't you have been masterminding? couldn't he have been masterminding? couldn't we have been masterminding? couldn't you have been masterminding? couldn't they have been masterminding?