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 couldn't watermark
you couldn't watermark
he couldn't watermark
we couldn't watermark
you couldn't watermark
they couldn't watermark

V-ing form

I couldn't be watermarking
you couldn't be watermarking
he couldn't be watermarking
we couldn't be watermarking
you couldn't be watermarking
they couldn't be watermarking

Perfect

I couldn't have watermarked
you couldn't have watermarked
he couldn't have watermarked
we couldn't have watermarked
you couldn't have watermarked
they couldn't have watermarked

V-ing perfect

I couldn't have been watermarking
you couldn't have been watermarking
he couldn't have been watermarking
we couldn't have been watermarking
you couldn't have been watermarking
they couldn't 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

couldn't I watermark?
couldn't you watermark?
couldn't he watermark?
couldn't we watermark?
couldn't you watermark?
couldn't they watermark?

V-ing form

couldn't I be watermarking?
couldn't you be watermarking?
couldn't he be watermarking?
couldn't we be watermarking?
couldn't you be watermarking?
couldn't they be watermarking?

Perfect

couldn't I have watermarked?
couldn't you have watermarked?
couldn't he have watermarked?
couldn't we have watermarked?
couldn't you have watermarked?
couldn't they have watermarked?

V-ing perfect

couldn't I have been watermarking?
couldn't you have been watermarking?
couldn't he have been watermarking?
couldn't we have been watermarking?
couldn't you have been watermarking?
couldn't they have been watermarking?

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