could reduce
Regular verb: reduce - reduced- reduced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could reduce
you could reduce
he could reduce
we could reduce
you could reduce
they could reduce 	I could be reducing
you could be reducing
he could be reducing
we could be reducing
you could be reducing
they could be reducing	I could have reduced
you could have reduced
he could have reduced
we could have reduced
you could have reduced
they could have reduced	I could have been reducing
you could have been reducing
he could have been reducing
we could have been reducing
you could have been reducing
they could have been reducing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not reduce
you could not reduce
he could not reduce
we could not reduce
you could not reduce
they could not reduce 	I could not be reducing
you could not be reducing
he could not be reducing
we could not be reducing
you could not be reducing
they could not be reducing	I could not have reduced
you could not have reduced
he could not have reduced
we could not have reduced
you could not have reduced
they could not have reduced	I could not have been reducing
you could not have been reducing
he could not have been reducing
we could not have been reducing
you could not have been reducing
they could not have been reducing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I reduce?
could you reduce?
could he reduce?
could we reduce?
could you reduce?
could they reduce? 	could I be reducing?
could you be reducing?
could he be reducing?
could we be reducing?
could you be reducing?
could they be reducing? 	could I have reduced?
could you have reduced?
could he have reduced?
could we have reduced?
could you have reduced?
could they have reduced? 	could I have been reducing?
could you have been reducing?
could he have been reducing?
could we have been reducing?
could you have been reducing?
could they have been reducing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not reduce?
could you not reduce?
could he not reduce?
could we not reduce?
could you not reduce?
could they not reduce? 	could I not be reducing?
could you not be reducing?
could he not be reducing?
could we not be reducing?
could you not be reducing?
could they not be reducing? 	could I not have reduced?
could you not have reduced?
could he not have reduced?
could we not have reduced?
could you not have reduced?
could they not have reduced? 	could I not have been reducing?
could you not have been reducing?
could he not have been reducing?
could we not have been reducing?
could you not have been reducing?
could they not have been reducing?