English verb conjugation
CAN HALLMARK

Regular verb: hallmark - hallmarked - hallmarked

Affirmation

Simple form	V-ing form
I can hallmark you can hallmark he can hallmark we can hallmark you can hallmark they can hallmark	I can be hallmarking you can be hallmarking he can be hallmarking we can be hallmarking you can be hallmarking they can be hallmarking
Perfect	V-ing perfect
I can have hallmarked you can have hallmarked he can have hallmarked we can have hallmarked you can have hallmarked they can have hallmarked	I can have been hallmarking you can have been hallmarking he can have been hallmarking we can have been hallmarking you can have been hallmarking they can have been hallmarking

Negation

Simple form	V-ing form
I can't hallmark you can't hallmark he can't hallmark we can't hallmark you can't hallmark they can't hallmark	I can't be hallmarking you can't be hallmarking he can't be hallmarking we can't be hallmarking you can't be hallmarking they can't be hallmarking
Perfect	V-ing perfect
I can't have hallmarked you can't have hallmarked he can't have hallmarked we can't have hallmarked you can't have hallmarked they can't have hallmarked	I can't have been hallmarking you can't have been hallmarking he can't have been hallmarking we can't have been hallmarking you can't have been hallmarking they can't have been hallmarking

Interrogative form

Simple form	V-ing form
can I hallmark? can you hallmark? can he hallmark? can we hallmark? can you hallmark? can they hallmark?	can I be hallmarking? can you be hallmarking? can he be hallmarking? can we be hallmarking? can you be hallmarking? can they be hallmarking?
Perfect	V-ing perfect
can I have hallmarked? can you have hallmarked? can he have hallmarked? can we have hallmarked? can you have hallmarked? can they have hallmarked?	can I have been hallmarking? can you have been hallmarking? can he have been hallmarking? can we have been hallmarking? can you have been hallmarking? can they have been hallmarking?

Interro-negative form

Simple form	V-ing form
can't I hallmark? can't you hallmark? can't he hallmark? can't we hallmark? can't you hallmark? can't they hallmark?	can't I be hallmarking? can't you be hallmarking? can't he be hallmarking? can't we be hallmarking? can't you be hallmarking? can't they be hallmarking?
Perfect	V-ing perfect
can't I have hallmarked? can't you have hallmarked? can't he have hallmarked? can't we have hallmarked? can't you have hallmarked? can't they have hallmarked?	can't I have been hallmarking? can't you have been hallmarking? can't he have been hallmarking? can't we have been hallmarking? can't you have been hallmarking? can't they have been hallmarking?