could canal
Regular verb: canal - canaled- canaled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could canal
you could canal
he could canal
we could canal
you could canal
they could canal 	I could be canaling
you could be canaling
he could be canaling
we could be canaling
you could be canaling
they could be canaling	I could have canaled
you could have canaled
he could have canaled
we could have canaled
you could have canaled
they could have canaled	I could have been canaling
you could have been canaling
he could have been canaling
we could have been canaling
you could have been canaling
they could have been canaling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't canal
you couldn't canal
he couldn't canal
we couldn't canal
you couldn't canal
they couldn't canal 	I couldn't be canaling
you couldn't be canaling
he couldn't be canaling
we couldn't be canaling
you couldn't be canaling
they couldn't be canaling	I couldn't have canaled
you couldn't have canaled
he couldn't have canaled
we couldn't have canaled
you couldn't have canaled
they couldn't have canaled	I couldn't have been canaling
you couldn't have been canaling
he couldn't have been canaling
we couldn't have been canaling
you couldn't have been canaling
they couldn't have been canaling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I canal?
could you canal?
could he canal?
could we canal?
could you canal?
could they canal? 	could I be canaling?
could you be canaling?
could he be canaling?
could we be canaling?
could you be canaling?
could they be canaling? 	could I have canaled?
could you have canaled?
could he have canaled?
could we have canaled?
could you have canaled?
could they have canaled? 	could I have been canaling?
could you have been canaling?
could he have been canaling?
could we have been canaling?
could you have been canaling?
could they have been canaling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I canal?
couldn't you canal?
couldn't he canal?
couldn't we canal?
couldn't you canal?
couldn't they canal? 	couldn't I be canaling?
couldn't you be canaling?
couldn't he be canaling?
couldn't we be canaling?
couldn't you be canaling?
couldn't they be canaling? 	couldn't I have canaled?
couldn't you have canaled?
couldn't he have canaled?
couldn't we have canaled?
couldn't you have canaled?
couldn't they have canaled? 	couldn't I have been canaling?
couldn't you have been canaling?
couldn't he have been canaling?
couldn't we have been canaling?
couldn't you have been canaling?
couldn't they have been canaling?