English verb conjugation
COULD MELLOW

Regular verb: mellow - mellowed - mellowed

Affirmation

Simple form	V-ing form
I could mellow you could mellow he could mellow we could mellow you could mellow they could mellow	I could be mellowing you could be mellowing he could be mellowing we could be mellowing you could be mellowing they could be mellowing
Perfect	V-ing perfect
I could have mellowed you could have mellowed he could have mellowed we could have mellowed you could have mellowed they could have mellowed	I could have been mellowing you could have been mellowing he could have been mellowing we could have been mellowing you could have been mellowing they could have been mellowing

Negation

Simple form	V-ing form
I could not mellow you could not mellow he could not mellow we could not mellow you could not mellow they could not mellow	I could not be mellowing you could not be mellowing he could not be mellowing we could not be mellowing you could not be mellowing they could not be mellowing
Perfect	V-ing perfect
I could not have mellowed you could not have mellowed he could not have mellowed we could not have mellowed you could not have mellowed they could not have mellowed	I could not have been mellowing you could not have been mellowing he could not have been mellowing we could not have been mellowing you could not have been mellowing they could not have been mellowing

Interrogative form

Simple form	V-ing form
could I mellow? could you mellow? could he mellow? could we mellow? could you mellow? could they mellow?	could I be mellowing? could you be mellowing? could he be mellowing? could we be mellowing? could you be mellowing? could they be mellowing?
Perfect	V-ing perfect
could I have mellowed? could you have mellowed? could he have mellowed? could we have mellowed? could you have mellowed? could they have mellowed?	could I have been mellowing? could you have been mellowing? could he have been mellowing? could we have been mellowing? could you have been mellowing? could they have been mellowing?

Interro-negative form

Simple form	V-ing form
could I not mellow? could you not mellow? could he not mellow? could we not mellow? could you not mellow? could they not mellow?	could I not be mellowing? could you not be mellowing? could he not be mellowing? could we not be mellowing? could you not be mellowing? could they not be mellowing?
Perfect	V-ing perfect
could I not have mellowed? could you not have mellowed? could he not have mellowed? could we not have mellowed? could you not have mellowed? could they not have mellowed?	could I not have been mellowing? could you not have been mellowing? could he not have been mellowing? could we not have been mellowing? could you not have been mellowing? could they not have been mellowing?