English verb conjugation
COULD NICKEL

Regular verb: nickel - nickelled - nickelled

Affirmation

Simple form	V-ing form
I could nickel you could nickel he could nickel we could nickel you could nickel they could nickel	I could be nickelling you could be nickelling he could be nickelling we could be nickelling you could be nickelling they could be nickelling
Perfect	V-ing perfect
I could have nickelled you could have nickelled he could have nickelled we could have nickelled you could have nickelled they could have nickelled	I could have been nickelling you could have been nickelling he could have been nickelling we could have been nickelling you could have been nickelling they could have been nickelling

Negation

Simple form	V-ing form
I could not nickel you could not nickel he could not nickel we could not nickel you could not nickel they could not nickel	I could not be nickelling you could not be nickelling he could not be nickelling we could not be nickelling you could not be nickelling they could not be nickelling
Perfect	V-ing perfect
I could not have nickelled you could not have nickelled he could not have nickelled we could not have nickelled you could not have nickelled they could not have nickelled	I could not have been nickelling you could not have been nickelling he could not have been nickelling we could not have been nickelling you could not have been nickelling they could not have been nickelling

Interrogative form

Simple form	V-ing form
could I nickel? could you nickel? could he nickel? could we nickel? could you nickel? could they nickel?	could I be nickelling? could you be nickelling? could he be nickelling? could we be nickelling? could you be nickelling? could they be nickelling?
Perfect	V-ing perfect
could I have nickelled? could you have nickelled? could he have nickelled? could we have nickelled? could you have nickelled? could they have nickelled?	could I have been nickelling? could you have been nickelling? could he have been nickelling? could we have been nickelling? could you have been nickelling? could they have been nickelling?

Interro-negative form

Simple form	V-ing form
could I not nickel? could you not nickel? could he not nickel? could we not nickel? could you not nickel? could they not nickel?	could I not be nickelling? could you not be nickelling? could he not be nickelling? could we not be nickelling? could you not be nickelling? could they not be nickelling?
Perfect	V-ing perfect
could I not have nickelled? could you not have nickelled? could he not have nickelled? could we not have nickelled? could you not have nickelled? could they not have nickelled?	could I not have been nickelling? could you not have been nickelling? could he not have been nickelling? could we not have been nickelling? could you not have been nickelling? could they not have been nickelling?