should precertify
Regular verb: precertify - precertified- precertified

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?