could watermark
Verbo regular: watermark - watermarked- watermarked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could watermark
you could watermark
he could watermark
we could watermark
you could watermark
they could watermark 	I could be watermarking
you could be watermarking
he could be watermarking
we could be watermarking
you could be watermarking
they could be watermarking	I could have watermarked
you could have watermarked
he could have watermarked
we could have watermarked
you could have watermarked
they could have watermarked	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	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not watermark
you could not watermark
he could not watermark
we could not watermark
you could not watermark
they could not watermark 	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	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	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	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I watermark?
could you watermark?
could he watermark?
could we watermark?
could you watermark?
could they watermark? 	could I be watermarking?
could you be watermarking?
could he be watermarking?
could we be watermarking?
could you be watermarking?
could they be watermarking? 	could I have watermarked?
could you have watermarked?
could he have watermarked?
could we have watermarked?
could you have watermarked?
could they have watermarked? 	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? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not watermark?
could you not watermark?
could he not watermark?
could we not watermark?
could you not watermark?
could they not watermark? 	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? 	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? 	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?