English verb conjugation
COULD SEX

Regular verb: sex - sexed - sexed

Affirmation

Simple form	V-ing form
I could sex you could sex he could sex we could sex you could sex they could sex	I could be sexing you could be sexing he could be sexing we could be sexing you could be sexing they could be sexing
Perfect	V-ing perfect
I could have sexed you could have sexed he could have sexed we could have sexed you could have sexed they could have sexed	I could have been sexing you could have been sexing he could have been sexing we could have been sexing you could have been sexing they could have been sexing

Negation

Simple form	V-ing form
I couldn't sex you couldn't sex he couldn't sex we couldn't sex you couldn't sex they couldn't sex	I couldn't be sexing you couldn't be sexing he couldn't be sexing we couldn't be sexing you couldn't be sexing they couldn't be sexing
Perfect	V-ing perfect
I couldn't have sexed you couldn't have sexed he couldn't have sexed we couldn't have sexed you couldn't have sexed they couldn't have sexed	I couldn't have been sexing you couldn't have been sexing he couldn't have been sexing we couldn't have been sexing you couldn't have been sexing they couldn't have been sexing

Interrogative form

Simple form	V-ing form
could I sex? could you sex? could he sex? could we sex? could you sex? could they sex?	could I be sexing? could you be sexing? could he be sexing? could we be sexing? could you be sexing? could they be sexing?
Perfect	V-ing perfect
could I have sexed? could you have sexed? could he have sexed? could we have sexed? could you have sexed? could they have sexed?	could I have been sexing? could you have been sexing? could he have been sexing? could we have been sexing? could you have been sexing? could they have been sexing?

Interro-negative form

Simple form	V-ing form
couldn't I sex? couldn't you sex? couldn't he sex? couldn't we sex? couldn't you sex? couldn't they sex?	couldn't I be sexing? couldn't you be sexing? couldn't he be sexing? couldn't we be sexing? couldn't you be sexing? couldn't they be sexing?
Perfect	V-ing perfect
couldn't I have sexed? couldn't you have sexed? couldn't he have sexed? couldn't we have sexed? couldn't you have sexed? couldn't they have sexed?	couldn't I have been sexing? couldn't you have been sexing? couldn't he have been sexing? couldn't we have been sexing? couldn't you have been sexing? couldn't they have been sexing?