Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could knit knit you could knit knit he could knit knit we could knit knit you could knit knit they could knit knit
V-ing form
I could be knit kniting you could be knit kniting he could be knit kniting we could be knit kniting you could be knit kniting they could be knit kniting
Perfect
I could have knit knited you could have knit knited he could have knit knited we could have knit knited you could have knit knited they could have knit knited
V-ing perfect
I could have been knit kniting you could have been knit kniting he could have been knit kniting we could have been knit kniting you could have been knit kniting they could have been knit kniting
Negation
Simple form
I could not knit knit you could not knit knit he could not knit knit we could not knit knit you could not knit knit they could not knit knit
V-ing form
I could not be knit kniting you could not be knit kniting he could not be knit kniting we could not be knit kniting you could not be knit kniting they could not be knit kniting
Perfect
I could not have knit knited you could not have knit knited he could not have knit knited we could not have knit knited you could not have knit knited they could not have knit knited
V-ing perfect
I could not have been knit kniting you could not have been knit kniting he could not have been knit kniting we could not have been knit kniting you could not have been knit kniting they could not have been knit kniting
Interrogative form
Simple form
could I knit knit? could you knit knit? could he knit knit? could we knit knit? could you knit knit? could they knit knit?
V-ing form
could I be knit kniting? could you be knit kniting? could he be knit kniting? could we be knit kniting? could you be knit kniting? could they be knit kniting?
Perfect
could I have knit knited? could you have knit knited? could he have knit knited? could we have knit knited? could you have knit knited? could they have knit knited?
V-ing perfect
could I have been knit kniting? could you have been knit kniting? could he have been knit kniting? could we have been knit kniting? could you have been knit kniting? could they have been knit kniting?
Interro-negative form
Simple form
could I not knit knit? could you not knit knit? could he not knit knit? could we not knit knit? could you not knit knit? could they not knit knit?
V-ing form
could I not be knit kniting? could you not be knit kniting? could he not be knit kniting? could we not be knit kniting? could you not be knit kniting? could they not be knit kniting?
Perfect
could I not have knit knited? could you not have knit knited? could he not have knit knited? could we not have knit knited? could you not have knit knited? could they not have knit knited?
V-ing perfect
could I not have been knit kniting? could you not have been knit kniting? could he not have been knit kniting? could we not have been knit kniting? could you not have been knit kniting? could they not have been knit kniting?