English verb conjugation
COULD TWIST

Regular verb: twist - twisted - twisted

Affirmation

Simple form	V-ing form
I could twist you could twist he could twist we could twist you could twist they could twist	I could be twisting you could be twisting he could be twisting we could be twisting you could be twisting they could be twisting
Perfect	V-ing perfect
I could have twisted you could have twisted he could have twisted we could have twisted you could have twisted they could have twisted	I could have been twisting you could have been twisting he could have been twisting we could have been twisting you could have been twisting they could have been twisting

Negation

Simple form	V-ing form
I could not twist you could not twist he could not twist we could not twist you could not twist they could not twist	I could not be twisting you could not be twisting he could not be twisting we could not be twisting you could not be twisting they could not be twisting
Perfect	V-ing perfect
I could not have twisted you could not have twisted he could not have twisted we could not have twisted you could not have twisted they could not have twisted	I could not have been twisting you could not have been twisting he could not have been twisting we could not have been twisting you could not have been twisting they could not have been twisting

Interrogative form

Simple form	V-ing form
could I twist? could you twist? could he twist? could we twist? could you twist? could they twist?	could I be twisting? could you be twisting? could he be twisting? could we be twisting? could you be twisting? could they be twisting?
Perfect	V-ing perfect
could I have twisted? could you have twisted? could he have twisted? could we have twisted? could you have twisted? could they have twisted?	could I have been twisting? could you have been twisting? could he have been twisting? could we have been twisting? could you have been twisting? could they have been twisting?

Interro-negative form

Simple form	V-ing form
could I not twist? could you not twist? could he not twist? could we not twist? could you not twist? could they not twist?	could I not be twisting? could you not be twisting? could he not be twisting? could we not be twisting? could you not be twisting? could they not be twisting?
Perfect	V-ing perfect
could I not have twisted? could you not have twisted? could he not have twisted? could we not have twisted? could you not have twisted? could they not have twisted?	could I not have been twisting? could you not have been twisting? could he not have been twisting? could we not have been twisting? could you not have been twisting? could they not have been twisting?