English verb conjugation COULD KNURL

Regular verb: knurl - knurled - knurled

Affirmation

Simple form

I could knurl
you could knurl
she could knurl
we could knurl
you could knurl
they could knurl

V-ing form

I could be knurling
you could be knurling
she could be knurling
we could be knurling
you could be knurling
they could be knurling

Perfect

I could have knurled
you could have knurled
she could have knurled
we could have knurled
you could have knurled
they could have knurled

V-ing perfect

I could have been knurling
you could have been knurling
she could have been knurling
we could have been knurling
you could have been knurling
they could have been knurling

Negation

Simple form

I could not knurl
you could not knurl
she could not knurl
we could not knurl
you could not knurl
they could not knurl

V-ing form

I could not be knurling
you could not be knurling
she could not be knurling
we could not be knurling
you could not be knurling
they could not be knurling

Perfect

I could not have knurled
you could not have knurled
she could not have knurled
we could not have knurled
you could not have knurled
they could not have knurled

V-ing perfect

I could not have been knurling
you could not have been knurling
she could not have been knurling
we could not have been knurling
you could not have been knurling
they could not have been knurling

Interrogative form

Simple form

could I knurl?
could you knurl?
could she knurl?
could we knurl?
could you knurl?
could they knurl?

V-ing form

could I be knurling?
could you be knurling?
could she be knurling?
could we be knurling?
could you be knurling?
could they be knurling?

Perfect

could I have knurled?
could you have knurled?
could she have knurled?
could we have knurled?
could you have knurled?
could they have knurled?

V-ing perfect

could I have been knurling?
could you have been knurling?
could she have been knurling?
could we have been knurling?
could you have been knurling?
could they have been knurling?

Interro-negative form

Simple form

could I not knurl?
could you not knurl?
could she not knurl?
could we not knurl?
could you not knurl?
could they not knurl?

V-ing form

could I not be knurling?
could you not be knurling?
could she not be knurling?
could we not be knurling?
could you not be knurling?
could they not be knurling?

Perfect

could I not have knurled?
could you not have knurled?
could she not have knurled?
could we not have knurled?
could you not have knurled?
could they not have knurled?

V-ing perfect

could I not have been knurling?
could you not have been knurling?
could she not have been knurling?
could we not have been knurling?
could you not have been knurling?
could they not have been knurling?

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