could fix
Regular verb: fix - fixed- fixed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could fix
you could fix
he could fix
we could fix
you could fix
they could fix 	I could be fixing
you could be fixing
he could be fixing
we could be fixing
you could be fixing
they could be fixing	I could have fixed
you could have fixed
he could have fixed
we could have fixed
you could have fixed
they could have fixed	I could have been fixing
you could have been fixing
he could have been fixing
we could have been fixing
you could have been fixing
they could have been fixing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not fix
you could not fix
he could not fix
we could not fix
you could not fix
they could not fix 	I could not be fixing
you could not be fixing
he could not be fixing
we could not be fixing
you could not be fixing
they could not be fixing	I could not have fixed
you could not have fixed
he could not have fixed
we could not have fixed
you could not have fixed
they could not have fixed	I could not have been fixing
you could not have been fixing
he could not have been fixing
we could not have been fixing
you could not have been fixing
they could not have been fixing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I fix?
could you fix?
could he fix?
could we fix?
could you fix?
could they fix? 	could I be fixing?
could you be fixing?
could he be fixing?
could we be fixing?
could you be fixing?
could they be fixing? 	could I have fixed?
could you have fixed?
could he have fixed?
could we have fixed?
could you have fixed?
could they have fixed? 	could I have been fixing?
could you have been fixing?
could he have been fixing?
could we have been fixing?
could you have been fixing?
could they have been fixing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not fix?
could you not fix?
could he not fix?
could we not fix?
could you not fix?
could they not fix? 	could I not be fixing?
could you not be fixing?
could he not be fixing?
could we not be fixing?
could you not be fixing?
could they not be fixing? 	could I not have fixed?
could you not have fixed?
could he not have fixed?
could we not have fixed?
could you not have fixed?
could they not have fixed? 	could I not have been fixing?
could you not have been fixing?
could he not have been fixing?
could we not have been fixing?
could you not have been fixing?
could they not have been fixing?