should quintuple
Regular verb: quintuple - quintupled- quintupled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should quintuple
you should quintuple
he should quintuple
we should quintuple
you should quintuple
they should quintuple 	I should be quintupling
you should be quintupling
he should be quintupling
we should be quintupling
you should be quintupling
they should be quintupling	I should have quintupled
you should have quintupled
he should have quintupled
we should have quintupled
you should have quintupled
they should have quintupled	I should have been quintupling
you should have been quintupling
he should have been quintupling
we should have been quintupling
you should have been quintupling
they should have been quintupling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not quintuple
you should not quintuple
he should not quintuple
we should not quintuple
you should not quintuple
they should not quintuple 	I should not be quintupling
you should not be quintupling
he should not be quintupling
we should not be quintupling
you should not be quintupling
they should not be quintupling	I should not have quintupled
you should not have quintupled
he should not have quintupled
we should not have quintupled
you should not have quintupled
they should not have quintupled	I should not have been quintupling
you should not have been quintupling
he should not have been quintupling
we should not have been quintupling
you should not have been quintupling
they should not have been quintupling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I quintuple?
should you quintuple?
should he quintuple?
should we quintuple?
should you quintuple?
should they quintuple? 	should I be quintupling?
should you be quintupling?
should he be quintupling?
should we be quintupling?
should you be quintupling?
should they be quintupling? 	should I have quintupled?
should you have quintupled?
should he have quintupled?
should we have quintupled?
should you have quintupled?
should they have quintupled? 	should I have been quintupling?
should you have been quintupling?
should he have been quintupling?
should we have been quintupling?
should you have been quintupling?
should they have been quintupling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not quintuple?
should you not quintuple?
should he not quintuple?
should we not quintuple?
should you not quintuple?
should they not quintuple? 	should I not be quintupling?
should you not be quintupling?
should he not be quintupling?
should we not be quintupling?
should you not be quintupling?
should they not be quintupling? 	should I not have quintupled?
should you not have quintupled?
should he not have quintupled?
should we not have quintupled?
should you not have quintupled?
should they not have quintupled? 	should I not have been quintupling?
should you not have been quintupling?
should he not have been quintupling?
should we not have been quintupling?
should you not have been quintupling?
should they not have been quintupling?