could gel
Regular verb: gel - gelled- gelled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could gel
you could gel
she could gel
we could gel
you could gel
they could gel 	I could be gelling
you could be gelling
she could be gelling
we could be gelling
you could be gelling
they could be gelling	I could have gelled
you could have gelled
she could have gelled
we could have gelled
you could have gelled
they could have gelled	I could have been gelling
you could have been gelling
she could have been gelling
we could have been gelling
you could have been gelling
they could have been gelling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't gel
you couldn't gel
she couldn't gel
we couldn't gel
you couldn't gel
they couldn't gel 	I couldn't be gelling
you couldn't be gelling
she couldn't be gelling
we couldn't be gelling
you couldn't be gelling
they couldn't be gelling	I couldn't have gelled
you couldn't have gelled
she couldn't have gelled
we couldn't have gelled
you couldn't have gelled
they couldn't have gelled	I couldn't have been gelling
you couldn't have been gelling
she couldn't have been gelling
we couldn't have been gelling
you couldn't have been gelling
they couldn't have been gelling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I gel?
could you gel?
could she gel?
could we gel?
could you gel?
could they gel? 	could I be gelling?
could you be gelling?
could she be gelling?
could we be gelling?
could you be gelling?
could they be gelling? 	could I have gelled?
could you have gelled?
could she have gelled?
could we have gelled?
could you have gelled?
could they have gelled? 	could I have been gelling?
could you have been gelling?
could she have been gelling?
could we have been gelling?
could you have been gelling?
could they have been gelling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I gel?
couldn't you gel?
couldn't she gel?
couldn't we gel?
couldn't you gel?
couldn't they gel? 	couldn't I be gelling?
couldn't you be gelling?
couldn't she be gelling?
couldn't we be gelling?
couldn't you be gelling?
couldn't they be gelling? 	couldn't I have gelled?
couldn't you have gelled?
couldn't she have gelled?
couldn't we have gelled?
couldn't you have gelled?
couldn't they have gelled? 	couldn't I have been gelling?
couldn't you have been gelling?
couldn't she have been gelling?
couldn't we have been gelling?
couldn't you have been gelling?
couldn't they have been gelling?