English verb conjugation COULD WATERMARK

Regular verb: watermark - watermarked - watermarked

Affirmation

Simple form

I could watermark
you could watermark
he could watermark
we could watermark
you could watermark
they could watermark

V-ing form

I could be watermarking
you could be watermarking
he could be watermarking
we could be watermarking
you could be watermarking
they could be watermarking

Perfect

I could have watermarked
you could have watermarked
he could have watermarked
we could have watermarked
you could have watermarked
they could have watermarked

V-ing perfect

I could have been watermarking
you could have been watermarking
he could have been watermarking
we could have been watermarking
you could have been watermarking
they could have been watermarking

Negation

Simple form

I could not watermark
you could not watermark
he could not watermark
we could not watermark
you could not watermark
they could not watermark

V-ing form

I could not be watermarking
you could not be watermarking
he could not be watermarking
we could not be watermarking
you could not be watermarking
they could not be watermarking

Perfect

I could not have watermarked
you could not have watermarked
he could not have watermarked
we could not have watermarked
you could not have watermarked
they could not have watermarked

V-ing perfect

I could not have been watermarking
you could not have been watermarking
he could not have been watermarking
we could not have been watermarking
you could not have been watermarking
they could not have been watermarking

Interrogative form

Simple form

could I watermark?
could you watermark?
could he watermark?
could we watermark?
could you watermark?
could they watermark?

V-ing form

could I be watermarking?
could you be watermarking?
could he be watermarking?
could we be watermarking?
could you be watermarking?
could they be watermarking?

Perfect

could I have watermarked?
could you have watermarked?
could he have watermarked?
could we have watermarked?
could you have watermarked?
could they have watermarked?

V-ing perfect

could I have been watermarking?
could you have been watermarking?
could he have been watermarking?
could we have been watermarking?
could you have been watermarking?
could they have been watermarking?

Interro-negative form

Simple form

could I not watermark?
could you not watermark?
could he not watermark?
could we not watermark?
could you not watermark?
could they not watermark?

V-ing form

could I not be watermarking?
could you not be watermarking?
could he not be watermarking?
could we not be watermarking?
could you not be watermarking?
could they not be watermarking?

Perfect

could I not have watermarked?
could you not have watermarked?
could he not have watermarked?
could we not have watermarked?
could you not have watermarked?
could they not have watermarked?

V-ing perfect

could I not have been watermarking?
could you not have been watermarking?
could he not have been watermarking?
could we not have been watermarking?
could you not have been watermarking?
could they not have been watermarking?

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