English verb conjugation
SHOULD PRECERTIFY

Regular verb: precertify - precertified - precertified

Affirmation

Simple form	V-ing form
I should precertify you should precertify she should precertify we should precertify you should precertify they should precertify	I should be precertifying you should be precertifying she should be precertifying we should be precertifying you should be precertifying they should be precertifying
Perfect	V-ing perfect
I should have precertified you should have precertified she should have precertified we should have precertified you should have precertified they should have precertified	I should have been precertifying you should have been precertifying she should have been precertifying we should have been precertifying you should have been precertifying they should have been precertifying

Negation

Simple form	V-ing form
I should not precertify you should not precertify she should not precertify we should not precertify you should not precertify they should not precertify	I should not be precertifying you should not be precertifying she should not be precertifying we should not be precertifying you should not be precertifying they should not be precertifying
Perfect	V-ing perfect
I should not have precertified you should not have precertified she should not have precertified we should not have precertified you should not have precertified they should not have precertified	I should not have been precertifying you should not have been precertifying she should not have been precertifying we should not have been precertifying you should not have been precertifying they should not have been precertifying

Interrogative form

Simple form	V-ing form
should I precertify? should you precertify? should she precertify? should we precertify? should you precertify? should they precertify?	should I be precertifying? should you be precertifying? should she be precertifying? should we be precertifying? should you be precertifying? should they be precertifying?
Perfect	V-ing perfect
should I have precertified? should you have precertified? should she have precertified? should we have precertified? should you have precertified? should they have precertified?	should I have been precertifying? should you have been precertifying? should she have been precertifying? should we have been precertifying? should you have been precertifying? should they have been precertifying?

Interro-negative form

Simple form	V-ing form
should I not precertify? should you not precertify? should she not precertify? should we not precertify? should you not precertify? should they not precertify?	should I not be precertifying? should you not be precertifying? should she not be precertifying? should we not be precertifying? should you not be precertifying? should they not be precertifying?
Perfect	V-ing perfect
should I not have precertified? should you not have precertified? should she not have precertified? should we not have precertified? should you not have precertified? should they not have precertified?	should I not have been precertifying? should you not have been precertifying? should she not have been precertifying? should we not have been precertifying? should you not have been precertifying? should they not have been precertifying?