English verb conjugation
COULD REDUCE

Regular verb: reduce - reduced - reduced

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?