can gem
Regular verb: gem - gemed- gemed

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