English verb conjugation
COULD EXPECTORATE

Regular verb: expectorate - expectorated - expectorated

Affirmation

Simple form	V-ing form
I could expectorate you could expectorate he could expectorate we could expectorate you could expectorate they could expectorate	I could be expectorating you could be expectorating he could be expectorating we could be expectorating you could be expectorating they could be expectorating
Perfect	V-ing perfect
I could have expectorated you could have expectorated he could have expectorated we could have expectorated you could have expectorated they could have expectorated	I could have been expectorating you could have been expectorating he could have been expectorating we could have been expectorating you could have been expectorating they could have been expectorating

Negation

Simple form	V-ing form
I couldn't expectorate you couldn't expectorate he couldn't expectorate we couldn't expectorate you couldn't expectorate they couldn't expectorate	I couldn't be expectorating you couldn't be expectorating he couldn't be expectorating we couldn't be expectorating you couldn't be expectorating they couldn't be expectorating
Perfect	V-ing perfect
I couldn't have expectorated you couldn't have expectorated he couldn't have expectorated we couldn't have expectorated you couldn't have expectorated they couldn't have expectorated	I couldn't have been expectorating you couldn't have been expectorating he couldn't have been expectorating we couldn't have been expectorating you couldn't have been expectorating they couldn't have been expectorating

Interrogative form

Simple form	V-ing form
could I expectorate? could you expectorate? could he expectorate? could we expectorate? could you expectorate? could they expectorate?	could I be expectorating? could you be expectorating? could he be expectorating? could we be expectorating? could you be expectorating? could they be expectorating?
Perfect	V-ing perfect
could I have expectorated? could you have expectorated? could he have expectorated? could we have expectorated? could you have expectorated? could they have expectorated?	could I have been expectorating? could you have been expectorating? could he have been expectorating? could we have been expectorating? could you have been expectorating? could they have been expectorating?

Interro-negative form

Simple form	V-ing form
couldn't I expectorate? couldn't you expectorate? couldn't he expectorate? couldn't we expectorate? couldn't you expectorate? couldn't they expectorate?	couldn't I be expectorating? couldn't you be expectorating? couldn't he be expectorating? couldn't we be expectorating? couldn't you be expectorating? couldn't they be expectorating?
Perfect	V-ing perfect
couldn't I have expectorated? couldn't you have expectorated? couldn't he have expectorated? couldn't we have expectorated? couldn't you have expectorated? couldn't they have expectorated?	couldn't I have been expectorating? couldn't you have been expectorating? couldn't he have been expectorating? couldn't we have been expectorating? couldn't you have been expectorating? couldn't they have been expectorating?