should harshen
Regular verb: harshen - harshened- harshened

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not harshen
you should not harshen
she should not harshen
we should not harshen
you should not harshen
they should not harshen 	I should not be harshening
you should not be harshening
she should not be harshening
we should not be harshening
you should not be harshening
they should not be harshening	I should not have harshened
you should not have harshened
she should not have harshened
we should not have harshened
you should not have harshened
they should not have harshened	I should not have been harshening
you should not have been harshening
she should not have been harshening
we should not have been harshening
you should not have been harshening
they should not have been harshening	

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

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not harshen?
should you not harshen?
should she not harshen?
should we not harshen?
should you not harshen?
should they not harshen? 	should I not be harshening?
should you not be harshening?
should she not be harshening?
should we not be harshening?
should you not be harshening?
should they not be harshening? 	should I not have harshened?
should you not have harshened?
should she not have harshened?
should we not have harshened?
should you not have harshened?
should they not have harshened? 	should I not have been harshening?
should you not have been harshening?
should she not have been harshening?
should we not have been harshening?
should you not have been harshening?
should they not have been harshening?