could helm
Regular verb: helm - helmed- helmed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could helm
you could helm
he could helm
we could helm
you could helm
they could helm 	I could be helming
you could be helming
he could be helming
we could be helming
you could be helming
they could be helming	I could have helmed
you could have helmed
he could have helmed
we could have helmed
you could have helmed
they could have helmed	I could have been helming
you could have been helming
he could have been helming
we could have been helming
you could have been helming
they could have been helming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't helm
you couldn't helm
he couldn't helm
we couldn't helm
you couldn't helm
they couldn't helm 	I couldn't be helming
you couldn't be helming
he couldn't be helming
we couldn't be helming
you couldn't be helming
they couldn't be helming	I couldn't have helmed
you couldn't have helmed
he couldn't have helmed
we couldn't have helmed
you couldn't have helmed
they couldn't have helmed	I couldn't have been helming
you couldn't have been helming
he couldn't have been helming
we couldn't have been helming
you couldn't have been helming
they couldn't have been helming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I helm?
could you helm?
could he helm?
could we helm?
could you helm?
could they helm? 	could I be helming?
could you be helming?
could he be helming?
could we be helming?
could you be helming?
could they be helming? 	could I have helmed?
could you have helmed?
could he have helmed?
could we have helmed?
could you have helmed?
could they have helmed? 	could I have been helming?
could you have been helming?
could he have been helming?
could we have been helming?
could you have been helming?
could they have been helming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I helm?
couldn't you helm?
couldn't he helm?
couldn't we helm?
couldn't you helm?
couldn't they helm? 	couldn't I be helming?
couldn't you be helming?
couldn't he be helming?
couldn't we be helming?
couldn't you be helming?
couldn't they be helming? 	couldn't I have helmed?
couldn't you have helmed?
couldn't he have helmed?
couldn't we have helmed?
couldn't you have helmed?
couldn't they have helmed? 	couldn't I have been helming?
couldn't you have been helming?
couldn't he have been helming?
couldn't we have been helming?
couldn't you have been helming?
couldn't they have been helming?