ought to expurgate
Regular verb: expurgate - expurgated- expurgated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to expurgate
you ought to expurgate
he ought to expurgate
we ought to expurgate
you ought to expurgate
they ought to expurgate 	I ought to be expurgating
you ought to be expurgating
he ought to be expurgating
we ought to be expurgating
you ought to be expurgating
they ought to be expurgating	I ought to have expurgated
you ought to have expurgated
he ought to have expurgated
we ought to have expurgated
you ought to have expurgated
they ought to have expurgated	I ought to have been expurgating
you ought to have been expurgating
he ought to have been expurgating
we ought to have been expurgating
you ought to have been expurgating
they ought to have been expurgating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to expurgate
you oughtn't to expurgate
he oughtn't to expurgate
we oughtn't to expurgate
you oughtn't to expurgate
they oughtn't to expurgate 	I oughtn't to be expurgating
you oughtn't to be expurgating
he oughtn't to be expurgating
we oughtn't to be expurgating
you oughtn't to be expurgating
they oughtn't to be expurgating	I oughtn't to have expurgated
you oughtn't to have expurgated
he oughtn't to have expurgated
we oughtn't to have expurgated
you oughtn't to have expurgated
they oughtn't to have expurgated	I oughtn't to have been expurgating
you oughtn't to have been expurgating
he oughtn't to have been expurgating
we oughtn't to have been expurgating
you oughtn't to have been expurgating
they oughtn't to have been expurgating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I expurgate?
ought to you expurgate?
ought to he expurgate?
ought to we expurgate?
ought to you expurgate?
ought to they expurgate? 	ought to I be expurgating?
ought to you be expurgating?
ought to he be expurgating?
ought to we be expurgating?
ought to you be expurgating?
ought to they be expurgating? 	ought to I have expurgated?
ought to you have expurgated?
ought to he have expurgated?
ought to we have expurgated?
ought to you have expurgated?
ought to they have expurgated? 	ought to I have been expurgating?
ought to you have been expurgating?
ought to he have been expurgating?
ought to we have been expurgating?
ought to you have been expurgating?
ought to they have been expurgating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to expurgate?
oughtn't you to expurgate?
oughtn't he to expurgate?
oughtn't we to expurgate?
oughtn't you to expurgate?
oughtn't they to expurgate? 	oughtn't I to be expurgating?
oughtn't you to be expurgating?
oughtn't he to be expurgating?
oughtn't we to be expurgating?
oughtn't you to be expurgating?
oughtn't they to be expurgating? 	oughtn't I to have expurgated?
oughtn't you to have expurgated?
oughtn't he to have expurgated?
oughtn't we to have expurgated?
oughtn't you to have expurgated?
oughtn't they to have expurgated? 	oughtn't I to have been expurgating?
oughtn't you to have been expurgating?
oughtn't he to have been expurgating?
oughtn't we to have been expurgating?
oughtn't you to have been expurgating?
oughtn't they to have been expurgating?