I could double-knit you could double-knit he could double-knit we could double-knit you could double-knit they could double-knit
V-ing form
I could be double-kniting you could be double-kniting he could be double-kniting we could be double-kniting you could be double-kniting they could be double-kniting
Perfect
I could have double-knited you could have double-knited he could have double-knited we could have double-knited you could have double-knited they could have double-knited
V-ing perfect
I could have been double-kniting you could have been double-kniting he could have been double-kniting we could have been double-kniting you could have been double-kniting they could have been double-kniting
Negation
Simple form
I could not double-knit you could not double-knit he could not double-knit we could not double-knit you could not double-knit they could not double-knit
V-ing form
I could not be double-kniting you could not be double-kniting he could not be double-kniting we could not be double-kniting you could not be double-kniting they could not be double-kniting
Perfect
I could not have double-knited you could not have double-knited he could not have double-knited we could not have double-knited you could not have double-knited they could not have double-knited
V-ing perfect
I could not have been double-kniting you could not have been double-kniting he could not have been double-kniting we could not have been double-kniting you could not have been double-kniting they could not have been double-kniting
Interrogative form
Simple form
could I double-knit? could you double-knit? could he double-knit? could we double-knit? could you double-knit? could they double-knit?
V-ing form
could I be double-kniting? could you be double-kniting? could he be double-kniting? could we be double-kniting? could you be double-kniting? could they be double-kniting?
Perfect
could I have double-knited? could you have double-knited? could he have double-knited? could we have double-knited? could you have double-knited? could they have double-knited?
V-ing perfect
could I have been double-kniting? could you have been double-kniting? could he have been double-kniting? could we have been double-kniting? could you have been double-kniting? could they have been double-kniting?
Interro-negative form
Simple form
could I not double-knit? could you not double-knit? could he not double-knit? could we not double-knit? could you not double-knit? could they not double-knit?
V-ing form
could I not be double-kniting? could you not be double-kniting? could he not be double-kniting? could we not be double-kniting? could you not be double-kniting? could they not be double-kniting?
Perfect
could I not have double-knited? could you not have double-knited? could he not have double-knited? could we not have double-knited? could you not have double-knited? could they not have double-knited?
V-ing perfect
could I not have been double-kniting? could you not have been double-kniting? could he not have been double-kniting? could we not have been double-kniting? could you not have been double-kniting? could they not have been double-kniting?