ought to pierce
Regular verb: pierce - pierced- pierced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to pierce
you ought to pierce
she ought to pierce
we ought to pierce
you ought to pierce
they ought to pierce 	I ought to be piercing
you ought to be piercing
she ought to be piercing
we ought to be piercing
you ought to be piercing
they ought to be piercing	I ought to have pierced
you ought to have pierced
she ought to have pierced
we ought to have pierced
you ought to have pierced
they ought to have pierced	I ought to have been piercing
you ought to have been piercing
she ought to have been piercing
we ought to have been piercing
you ought to have been piercing
they ought to have been piercing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to pierce
you oughtn't to pierce
she oughtn't to pierce
we oughtn't to pierce
you oughtn't to pierce
they oughtn't to pierce 	I oughtn't to be piercing
you oughtn't to be piercing
she oughtn't to be piercing
we oughtn't to be piercing
you oughtn't to be piercing
they oughtn't to be piercing	I oughtn't to have pierced
you oughtn't to have pierced
she oughtn't to have pierced
we oughtn't to have pierced
you oughtn't to have pierced
they oughtn't to have pierced	I oughtn't to have been piercing
you oughtn't to have been piercing
she oughtn't to have been piercing
we oughtn't to have been piercing
you oughtn't to have been piercing
they oughtn't to have been piercing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I pierce?
ought to you pierce?
ought to she pierce?
ought to we pierce?
ought to you pierce?
ought to they pierce? 	ought to I be piercing?
ought to you be piercing?
ought to she be piercing?
ought to we be piercing?
ought to you be piercing?
ought to they be piercing? 	ought to I have pierced?
ought to you have pierced?
ought to she have pierced?
ought to we have pierced?
ought to you have pierced?
ought to they have pierced? 	ought to I have been piercing?
ought to you have been piercing?
ought to she have been piercing?
ought to we have been piercing?
ought to you have been piercing?
ought to they have been piercing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to pierce?
oughtn't you to pierce?
oughtn't she to pierce?
oughtn't we to pierce?
oughtn't you to pierce?
oughtn't they to pierce? 	oughtn't I to be piercing?
oughtn't you to be piercing?
oughtn't she to be piercing?
oughtn't we to be piercing?
oughtn't you to be piercing?
oughtn't they to be piercing? 	oughtn't I to have pierced?
oughtn't you to have pierced?
oughtn't she to have pierced?
oughtn't we to have pierced?
oughtn't you to have pierced?
oughtn't they to have pierced? 	oughtn't I to have been piercing?
oughtn't you to have been piercing?
oughtn't she to have been piercing?
oughtn't we to have been piercing?
oughtn't you to have been piercing?
oughtn't they to have been piercing?