English verb conjugation
CAN WATERMARK

Regular verb: watermark - watermarked - watermarked

Affirmation

Simple form	V-ing form
I can watermark you can watermark she can watermark we can watermark you can watermark they can watermark	I can be watermarking you can be watermarking she 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 she 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 she 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 can't watermark you can't watermark she can't watermark we can't watermark you can't watermark they can't watermark	I can't be watermarking you can't be watermarking she can't be watermarking we can't be watermarking you can't be watermarking they can't be watermarking
Perfect	V-ing perfect
I can't have watermarked you can't have watermarked she can't have watermarked we can't have watermarked you can't have watermarked they can't have watermarked	I can't have been watermarking you can't have been watermarking she can't have been watermarking we can't have been watermarking you can't have been watermarking they can't have been watermarking

Interrogative form

Simple form	V-ing form
can I watermark? can you watermark? can she watermark? can we watermark? can you watermark? can they watermark?	can I be watermarking? can you be watermarking? can she 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 she 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 she 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't I watermark? can't you watermark? can't she watermark? can't we watermark? can't you watermark? can't they watermark?	can't I be watermarking? can't you be watermarking? can't she be watermarking? can't we be watermarking? can't you be watermarking? can't they be watermarking?
Perfect	V-ing perfect
can't I have watermarked? can't you have watermarked? can't she have watermarked? can't we have watermarked? can't you have watermarked? can't they have watermarked?	can't I have been watermarking? can't you have been watermarking? can't she have been watermarking? can't we have been watermarking? can't you have been watermarking? can't they have been watermarking?