English verb conjugation
COULD GEM

Regular verb: gem - gemed - gemed

Affirmation

Simple form	V-ing form
I could gem you could gem she could gem we could gem you could gem they could gem	I could be geming you could be geming she 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 she 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 she 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 she 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 she 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 she 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 she 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 she gem? could we gem? could you gem? could they gem?	could I be geming? could you be geming? could she 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 she 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 she 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 she 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 she 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 she 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 she have been geming? couldn't we have been geming? couldn't you have been geming? couldn't they have been geming?