English verb conjugation
COULD GEM

Regular verb: gem - gemed - gemed

Affirmation

Simple form	V-ing form
I could gem you could gem he could gem we could gem you could gem they could gem	I could be geming you could be geming he could be geming we could be geming you could be geming they could be geming
Perfect	V-ing perfect
I could have gemed you could have gemed he could have gemed we could have gemed you could have gemed they could have gemed	I could have been geming you could have been geming he could have been geming we could have been geming you could have been geming they could have been geming

Negation

Simple form	V-ing form
I couldn't gem you couldn't gem he couldn't gem we couldn't gem you couldn't gem they couldn't gem	I couldn't be geming you couldn't be geming he couldn't be geming we couldn't be geming you couldn't be geming they couldn't be geming
Perfect	V-ing perfect
I couldn't have gemed you couldn't have gemed he couldn't have gemed we couldn't have gemed you couldn't have gemed they couldn't have gemed	I couldn't have been geming you couldn't have been geming he couldn't have been geming we couldn't have been geming you couldn't have been geming they couldn't have been geming

Interrogative form

Simple form	V-ing form
could I gem? could you gem? could he gem? could we gem? could you gem? could they gem?	could I be geming? could you be geming? could he be geming? could we be geming? could you be geming? could they be geming?
Perfect	V-ing perfect
could I have gemed? could you have gemed? could he have gemed? could we have gemed? could you have gemed? could they have gemed?	could I have been geming? could you have been geming? could he have been geming? could we have been geming? could you have been geming? could they have been geming?

Interro-negative form

Simple form	V-ing form
couldn't I gem? couldn't you gem? couldn't he gem? couldn't we gem? couldn't you gem? couldn't they gem?	couldn't I be geming? couldn't you be geming? couldn't he be geming? couldn't we be geming? couldn't you be geming? couldn't they be geming?
Perfect	V-ing perfect
couldn't I have gemed? couldn't you have gemed? couldn't he have gemed? couldn't we have gemed? couldn't you have gemed? couldn't they have gemed?	couldn't I have been geming? couldn't you have been geming? couldn't he have been geming? couldn't we have been geming? couldn't you have been geming? couldn't they have been geming?