can watermark
Regular verb: watermark - watermarked- watermarked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can watermark
you can watermark
he can watermark
we can watermark
you can watermark
they can watermark 	I can be watermarking
you can be watermarking
he can be watermarking
we can be watermarking
you can be watermarking
they can be watermarking	I can have watermarked
you can have watermarked
he can have watermarked
we can have watermarked
you can have watermarked
they can have watermarked	I can have been watermarking
you can have been watermarking
he can have been watermarking
we can have been watermarking
you can have been watermarking
they can have been watermarking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot watermark
you cannot watermark
he cannot watermark
we cannot watermark
you cannot watermark
they cannot watermark 	I cannot be watermarking
you cannot be watermarking
he cannot be watermarking
we cannot be watermarking
you cannot be watermarking
they cannot be watermarking	I cannot have watermarked
you cannot have watermarked
he cannot have watermarked
we cannot have watermarked
you cannot have watermarked
they cannot have watermarked	I cannot have been watermarking
you cannot have been watermarking
he cannot have been watermarking
we cannot have been watermarking
you cannot have been watermarking
they cannot have been watermarking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I watermark?
can you watermark?
can he watermark?
can we watermark?
can you watermark?
can they watermark? 	can I be watermarking?
can you be watermarking?
can he be watermarking?
can we be watermarking?
can you be watermarking?
can they be watermarking? 	can I have watermarked?
can you have watermarked?
can he have watermarked?
can we have watermarked?
can you have watermarked?
can they have watermarked? 	can I have been watermarking?
can you have been watermarking?
can he have been watermarking?
can we have been watermarking?
can you have been watermarking?
can they have been watermarking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not watermark?
can you not watermark?
can he not watermark?
can we not watermark?
can you not watermark?
can they not watermark? 	can I not be watermarking?
can you not be watermarking?
can he not be watermarking?
can we not be watermarking?
can you not be watermarking?
can they not be watermarking? 	can I not have watermarked?
can you not have watermarked?
can he not have watermarked?
can we not have watermarked?
can you not have watermarked?
can they not have watermarked? 	can I not have been watermarking?
can you not have been watermarking?
can he not have been watermarking?
can we not have been watermarking?
can you not have been watermarking?
can they not have been watermarking?