English verb conjugation
SHOULD HARROW

Regular verb: harrow - harrowed - harrowed

Affirmation

Simple form	V-ing form
I should harrow you should harrow he should harrow we should harrow you should harrow they should harrow	I should be harrowing you should be harrowing he should be harrowing we should be harrowing you should be harrowing they should be harrowing
Perfect	V-ing perfect
I should have harrowed you should have harrowed he should have harrowed we should have harrowed you should have harrowed they should have harrowed	I should have been harrowing you should have been harrowing he should have been harrowing we should have been harrowing you should have been harrowing they should have been harrowing

Negation

Simple form	V-ing form
I should not harrow you should not harrow he should not harrow we should not harrow you should not harrow they should not harrow	I should not be harrowing you should not be harrowing he should not be harrowing we should not be harrowing you should not be harrowing they should not be harrowing
Perfect	V-ing perfect
I should not have harrowed you should not have harrowed he should not have harrowed we should not have harrowed you should not have harrowed they should not have harrowed	I should not have been harrowing you should not have been harrowing he should not have been harrowing we should not have been harrowing you should not have been harrowing they should not have been harrowing

Interrogative form

Simple form	V-ing form
should I harrow? should you harrow? should he harrow? should we harrow? should you harrow? should they harrow?	should I be harrowing? should you be harrowing? should he be harrowing? should we be harrowing? should you be harrowing? should they be harrowing?
Perfect	V-ing perfect
should I have harrowed? should you have harrowed? should he have harrowed? should we have harrowed? should you have harrowed? should they have harrowed?	should I have been harrowing? should you have been harrowing? should he have been harrowing? should we have been harrowing? should you have been harrowing? should they have been harrowing?

Interro-negative form

Simple form	V-ing form
should I not harrow? should you not harrow? should he not harrow? should we not harrow? should you not harrow? should they not harrow?	should I not be harrowing? should you not be harrowing? should he not be harrowing? should we not be harrowing? should you not be harrowing? should they not be harrowing?
Perfect	V-ing perfect
should I not have harrowed? should you not have harrowed? should he not have harrowed? should we not have harrowed? should you not have harrowed? should they not have harrowed?	should I not have been harrowing? should you not have been harrowing? should he not have been harrowing? should we not have been harrowing? should you not have been harrowing? should they not have been harrowing?