English verb conjugation
CAN HARSHEN

Regular verb: harshen - harshened - harshened

Affirmation

Simple form	V-ing form
I can harshen you can harshen she can harshen we can harshen you can harshen they can harshen	I can be harshening you can be harshening she can be harshening we can be harshening you can be harshening they can be harshening
Perfect	V-ing perfect
I can have harshened you can have harshened she can have harshened we can have harshened you can have harshened they can have harshened	I can have been harshening you can have been harshening she can have been harshening we can have been harshening you can have been harshening they can have been harshening

Negation

Simple form	V-ing form
I can't harshen you can't harshen she can't harshen we can't harshen you can't harshen they can't harshen	I can't be harshening you can't be harshening she can't be harshening we can't be harshening you can't be harshening they can't be harshening
Perfect	V-ing perfect
I can't have harshened you can't have harshened she can't have harshened we can't have harshened you can't have harshened they can't have harshened	I can't have been harshening you can't have been harshening she can't have been harshening we can't have been harshening you can't have been harshening they can't have been harshening

Interrogative form

Simple form	V-ing form
can I harshen? can you harshen? can she harshen? can we harshen? can you harshen? can they harshen?	can I be harshening? can you be harshening? can she be harshening? can we be harshening? can you be harshening? can they be harshening?
Perfect	V-ing perfect
can I have harshened? can you have harshened? can she have harshened? can we have harshened? can you have harshened? can they have harshened?	can I have been harshening? can you have been harshening? can she have been harshening? can we have been harshening? can you have been harshening? can they have been harshening?

Interro-negative form

Simple form	V-ing form
can't I harshen? can't you harshen? can't she harshen? can't we harshen? can't you harshen? can't they harshen?	can't I be harshening? can't you be harshening? can't she be harshening? can't we be harshening? can't you be harshening? can't they be harshening?
Perfect	V-ing perfect
can't I have harshened? can't you have harshened? can't she have harshened? can't we have harshened? can't you have harshened? can't they have harshened?	can't I have been harshening? can't you have been harshening? can't she have been harshening? can't we have been harshening? can't you have been harshening? can't they have been harshening?