English verb conjugation
OUGHT TO PIERCE

Regular verb: pierce - pierced - pierced

Affirmation

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