English verb conjugation
OUGHT TO PLACARD

Regular verb: placard - placarded - placarded

Affirmation

Simple form	V-ing form
I ought to placard you ought to placard she ought to placard we ought to placard you ought to placard they ought to placard	I ought to be placarding you ought to be placarding she ought to be placarding we ought to be placarding you ought to be placarding they ought to be placarding
Perfect	V-ing perfect
I ought to have placarded you ought to have placarded she ought to have placarded we ought to have placarded you ought to have placarded they ought to have placarded	I ought to have been placarding you ought to have been placarding she ought to have been placarding we ought to have been placarding you ought to have been placarding they ought to have been placarding

Negation

Simple form	V-ing form
I oughtn't to placard you oughtn't to placard she oughtn't to placard we oughtn't to placard you oughtn't to placard they oughtn't to placard	I oughtn't to be placarding you oughtn't to be placarding she oughtn't to be placarding we oughtn't to be placarding you oughtn't to be placarding they oughtn't to be placarding
Perfect	V-ing perfect
I oughtn't to have placarded you oughtn't to have placarded she oughtn't to have placarded we oughtn't to have placarded you oughtn't to have placarded they oughtn't to have placarded	I oughtn't to have been placarding you oughtn't to have been placarding she oughtn't to have been placarding we oughtn't to have been placarding you oughtn't to have been placarding they oughtn't to have been placarding

Interrogative form

Simple form	V-ing form
ought to I placard? ought to you placard? ought to she placard? ought to we placard? ought to you placard? ought to they placard?	ought to I be placarding? ought to you be placarding? ought to she be placarding? ought to we be placarding? ought to you be placarding? ought to they be placarding?
Perfect	V-ing perfect
ought to I have placarded? ought to you have placarded? ought to she have placarded? ought to we have placarded? ought to you have placarded? ought to they have placarded?	ought to I have been placarding? ought to you have been placarding? ought to she have been placarding? ought to we have been placarding? ought to you have been placarding? ought to they have been placarding?

Interro-negative form

Simple form	V-ing form
oughtn't I to placard? oughtn't you to placard? oughtn't she to placard? oughtn't we to placard? oughtn't you to placard? oughtn't they to placard?	oughtn't I to be placarding? oughtn't you to be placarding? oughtn't she to be placarding? oughtn't we to be placarding? oughtn't you to be placarding? oughtn't they to be placarding?
Perfect	V-ing perfect
oughtn't I to have placarded? oughtn't you to have placarded? oughtn't she to have placarded? oughtn't we to have placarded? oughtn't you to have placarded? oughtn't they to have placarded?	oughtn't I to have been placarding? oughtn't you to have been placarding? oughtn't she to have been placarding? oughtn't we to have been placarding? oughtn't you to have been placarding? oughtn't they to have been placarding?