ought to quadruple
Regular verb: quadruple - quadrupled- quadrupled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to quadruple
you ought to quadruple
he ought to quadruple
we ought to quadruple
you ought to quadruple
they ought to quadruple 	I ought to be quadrupling
you ought to be quadrupling
he ought to be quadrupling
we ought to be quadrupling
you ought to be quadrupling
they ought to be quadrupling	I ought to have quadrupled
you ought to have quadrupled
he ought to have quadrupled
we ought to have quadrupled
you ought to have quadrupled
they ought to have quadrupled	I ought to have been quadrupling
you ought to have been quadrupling
he ought to have been quadrupling
we ought to have been quadrupling
you ought to have been quadrupling
they ought to have been quadrupling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to quadruple
you ought not to quadruple
he ought not to quadruple
we ought not to quadruple
you ought not to quadruple
they ought not to quadruple 	I ought not to quadrupling
you ought not to quadrupling
he ought not to quadrupling
we ought not to quadrupling
you ought not to quadrupling
they ought not to quadrupling	I ought not to have quadrupled
you ought not to have quadrupled
he ought not to have quadrupled
we ought not to have quadrupled
you ought not to have quadrupled
they ought not to have quadrupled	I ought not to have been quadrupling
you ought not to have been quadrupling
he ought not to have been quadrupling
we ought not to have been quadrupling
you ought not to have been quadrupling
they ought not to have been quadrupling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I quadruple?
ought to you quadruple?
ought to he quadruple?
ought to we quadruple?
ought to you quadruple?
ought to they quadruple? 	ought to I be quadrupling?
ought to you be quadrupling?
ought to he be quadrupling?
ought to we be quadrupling?
ought to you be quadrupling?
ought to they be quadrupling? 	ought to I have quadrupled?
ought to you have quadrupled?
ought to he have quadrupled?
ought to we have quadrupled?
ought to you have quadrupled?
ought to they have quadrupled? 	ought to I have been quadrupling?
ought to you have been quadrupling?
ought to he have been quadrupling?
ought to we have been quadrupling?
ought to you have been quadrupling?
ought to they have been quadrupling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to quadruple?
ought you not to quadruple?
ought he not to quadruple?
ought we not to quadruple?
ought you not to quadruple?
ought they not to quadruple? 	ought I not to be quadrupling?
ought you not to be quadrupling?
ought he not to be quadrupling?
ought we not to be quadrupling?
ought you not to be quadrupling?
ought they not to be quadrupling? 	ought I not to have quadrupled?
ought you not to have quadrupled?
ought he not to have quadrupled?
ought we not to have quadrupled?
ought you not to have quadrupled?
ought they not to have quadrupled? 	ought I not to have been quadrupling?
ought you not to have been quadrupling?
ought he not to have been quadrupling?
ought we not to have been quadrupling?
ought you not to have been quadrupling?
ought they not to have been quadrupling?