could wale
Regular verb: wale - waled- waled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could wale
you could wale
he could wale
we could wale
you could wale
they could wale 	I could be waling
you could be waling
he could be waling
we could be waling
you could be waling
they could be waling	I could have waled
you could have waled
he could have waled
we could have waled
you could have waled
they could have waled	I could have been waling
you could have been waling
he could have been waling
we could have been waling
you could have been waling
they could have been waling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't wale
you couldn't wale
he couldn't wale
we couldn't wale
you couldn't wale
they couldn't wale 	I couldn't be waling
you couldn't be waling
he couldn't be waling
we couldn't be waling
you couldn't be waling
they couldn't be waling	I couldn't have waled
you couldn't have waled
he couldn't have waled
we couldn't have waled
you couldn't have waled
they couldn't have waled	I couldn't have been waling
you couldn't have been waling
he couldn't have been waling
we couldn't have been waling
you couldn't have been waling
they couldn't have been waling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I wale?
could you wale?
could he wale?
could we wale?
could you wale?
could they wale? 	could I be waling?
could you be waling?
could he be waling?
could we be waling?
could you be waling?
could they be waling? 	could I have waled?
could you have waled?
could he have waled?
could we have waled?
could you have waled?
could they have waled? 	could I have been waling?
could you have been waling?
could he have been waling?
could we have been waling?
could you have been waling?
could they have been waling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I wale?
couldn't you wale?
couldn't he wale?
couldn't we wale?
couldn't you wale?
couldn't they wale? 	couldn't I be waling?
couldn't you be waling?
couldn't he be waling?
couldn't we be waling?
couldn't you be waling?
couldn't they be waling? 	couldn't I have waled?
couldn't you have waled?
couldn't he have waled?
couldn't we have waled?
couldn't you have waled?
couldn't they have waled? 	couldn't I have been waling?
couldn't you have been waling?
couldn't he have been waling?
couldn't we have been waling?
couldn't you have been waling?
couldn't they have been waling?