English verb conjugation
SHOULD RESEARCH

Regular verb: research - researched - researched

Affirmation

Simple form	V-ing form
I should research you should research he should research we should research you should research they should research	I should be researching you should be researching he should be researching we should be researching you should be researching they should be researching
Perfect	V-ing perfect
I should have researched you should have researched he should have researched we should have researched you should have researched they should have researched	I should have been researching you should have been researching he should have been researching we should have been researching you should have been researching they should have been researching

Negation

Simple form	V-ing form
I should not research you should not research he should not research we should not research you should not research they should not research	I should not be researching you should not be researching he should not be researching we should not be researching you should not be researching they should not be researching
Perfect	V-ing perfect
I should not have researched you should not have researched he should not have researched we should not have researched you should not have researched they should not have researched	I should not have been researching you should not have been researching he should not have been researching we should not have been researching you should not have been researching they should not have been researching

Interrogative form

Simple form	V-ing form
should I research? should you research? should he research? should we research? should you research? should they research?	should I be researching? should you be researching? should he be researching? should we be researching? should you be researching? should they be researching?
Perfect	V-ing perfect
should I have researched? should you have researched? should he have researched? should we have researched? should you have researched? should they have researched?	should I have been researching? should you have been researching? should he have been researching? should we have been researching? should you have been researching? should they have been researching?

Interro-negative form

Simple form	V-ing form
should I not research? should you not research? should he not research? should we not research? should you not research? should they not research?	should I not be researching? should you not be researching? should he not be researching? should we not be researching? should you not be researching? should they not be researching?
Perfect	V-ing perfect
should I not have researched? should you not have researched? should he not have researched? should we not have researched? should you not have researched? should they not have researched?	should I not have been researching? should you not have been researching? should he not have been researching? should we not have been researching? should you not have been researching? should they not have been researching?