English verb conjugation
CAN GEM

Regular verb: gem - gemed - gemed

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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