could solo
Regular verb: solo - soloed- soloed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could solo
you could solo
he could solo
we could solo
you could solo
they could solo 	I could be soloing
you could be soloing
he could be soloing
we could be soloing
you could be soloing
they could be soloing	I could have soloed
you could have soloed
he could have soloed
we could have soloed
you could have soloed
they could have soloed	I could have been soloing
you could have been soloing
he could have been soloing
we could have been soloing
you could have been soloing
they could have been soloing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not solo
you could not solo
he could not solo
we could not solo
you could not solo
they could not solo 	I could not be soloing
you could not be soloing
he could not be soloing
we could not be soloing
you could not be soloing
they could not be soloing	I could not have soloed
you could not have soloed
he could not have soloed
we could not have soloed
you could not have soloed
they could not have soloed	I could not have been soloing
you could not have been soloing
he could not have been soloing
we could not have been soloing
you could not have been soloing
they could not have been soloing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I solo?
could you solo?
could he solo?
could we solo?
could you solo?
could they solo? 	could I be soloing?
could you be soloing?
could he be soloing?
could we be soloing?
could you be soloing?
could they be soloing? 	could I have soloed?
could you have soloed?
could he have soloed?
could we have soloed?
could you have soloed?
could they have soloed? 	could I have been soloing?
could you have been soloing?
could he have been soloing?
could we have been soloing?
could you have been soloing?
could they have been soloing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not solo?
could you not solo?
could he not solo?
could we not solo?
could you not solo?
could they not solo? 	could I not be soloing?
could you not be soloing?
could he not be soloing?
could we not be soloing?
could you not be soloing?
could they not be soloing? 	could I not have soloed?
could you not have soloed?
could he not have soloed?
could we not have soloed?
could you not have soloed?
could they not have soloed? 	could I not have been soloing?
could you not have been soloing?
could he not have been soloing?
could we not have been soloing?
could you not have been soloing?
could they not have been soloing?