English verb conjugation
COULD ADVANTAGE

Regular verb: advantage - advantaged - advantaged

Affirmation

Simple form	V-ing form
I could advantage you could advantage he could advantage we could advantage you could advantage they could advantage	I could be advantaging you could be advantaging he could be advantaging we could be advantaging you could be advantaging they could be advantaging
Perfect	V-ing perfect
I could have advantaged you could have advantaged he could have advantaged we could have advantaged you could have advantaged they could have advantaged	I could have been advantaging you could have been advantaging he could have been advantaging we could have been advantaging you could have been advantaging they could have been advantaging

Negation

Simple form	V-ing form
I couldn't advantage you couldn't advantage he couldn't advantage we couldn't advantage you couldn't advantage they couldn't advantage	I couldn't be advantaging you couldn't be advantaging he couldn't be advantaging we couldn't be advantaging you couldn't be advantaging they couldn't be advantaging
Perfect	V-ing perfect
I couldn't have advantaged you couldn't have advantaged he couldn't have advantaged we couldn't have advantaged you couldn't have advantaged they couldn't have advantaged	I couldn't have been advantaging you couldn't have been advantaging he couldn't have been advantaging we couldn't have been advantaging you couldn't have been advantaging they couldn't have been advantaging

Interrogative form

Simple form	V-ing form
could I advantage? could you advantage? could he advantage? could we advantage? could you advantage? could they advantage?	could I be advantaging? could you be advantaging? could he be advantaging? could we be advantaging? could you be advantaging? could they be advantaging?
Perfect	V-ing perfect
could I have advantaged? could you have advantaged? could he have advantaged? could we have advantaged? could you have advantaged? could they have advantaged?	could I have been advantaging? could you have been advantaging? could he have been advantaging? could we have been advantaging? could you have been advantaging? could they have been advantaging?

Interro-negative form

Simple form	V-ing form
couldn't I advantage? couldn't you advantage? couldn't he advantage? couldn't we advantage? couldn't you advantage? couldn't they advantage?	couldn't I be advantaging? couldn't you be advantaging? couldn't he be advantaging? couldn't we be advantaging? couldn't you be advantaging? couldn't they be advantaging?
Perfect	V-ing perfect
couldn't I have advantaged? couldn't you have advantaged? couldn't he have advantaged? couldn't we have advantaged? couldn't you have advantaged? couldn't they have advantaged?	couldn't I have been advantaging? couldn't you have been advantaging? couldn't he have been advantaging? couldn't we have been advantaging? couldn't you have been advantaging? couldn't they have been advantaging?