English verb conjugation
CAN WATERMARK

Regular verb: watermark - watermarked - watermarked

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?