English verb conjugation
OUGHT TO BOIL

Regular verb: boil - boiled - boiled

Affirmation

Simple form	V-ing form
I ought to boil you ought to boil she ought to boil we ought to boil you ought to boil they ought to boil	I ought to be boiling you ought to be boiling she ought to be boiling we ought to be boiling you ought to be boiling they ought to be boiling
Perfect	V-ing perfect
I ought to have boiled you ought to have boiled she ought to have boiled we ought to have boiled you ought to have boiled they ought to have boiled	I ought to have been boiling you ought to have been boiling she ought to have been boiling we ought to have been boiling you ought to have been boiling they ought to have been boiling

Negation

Simple form	V-ing form
I oughtn't to boil you oughtn't to boil she oughtn't to boil we oughtn't to boil you oughtn't to boil they oughtn't to boil	I oughtn't to be boiling you oughtn't to be boiling she oughtn't to be boiling we oughtn't to be boiling you oughtn't to be boiling they oughtn't to be boiling
Perfect	V-ing perfect
I oughtn't to have boiled you oughtn't to have boiled she oughtn't to have boiled we oughtn't to have boiled you oughtn't to have boiled they oughtn't to have boiled	I oughtn't to have been boiling you oughtn't to have been boiling she oughtn't to have been boiling we oughtn't to have been boiling you oughtn't to have been boiling they oughtn't to have been boiling

Interrogative form

Simple form	V-ing form
ought to I boil? ought to you boil? ought to she boil? ought to we boil? ought to you boil? ought to they boil?	ought to I be boiling? ought to you be boiling? ought to she be boiling? ought to we be boiling? ought to you be boiling? ought to they be boiling?
Perfect	V-ing perfect
ought to I have boiled? ought to you have boiled? ought to she have boiled? ought to we have boiled? ought to you have boiled? ought to they have boiled?	ought to I have been boiling? ought to you have been boiling? ought to she have been boiling? ought to we have been boiling? ought to you have been boiling? ought to they have been boiling?

Interro-negative form

Simple form	V-ing form
oughtn't I to boil? oughtn't you to boil? oughtn't she to boil? oughtn't we to boil? oughtn't you to boil? oughtn't they to boil?	oughtn't I to be boiling? oughtn't you to be boiling? oughtn't she to be boiling? oughtn't we to be boiling? oughtn't you to be boiling? oughtn't they to be boiling?
Perfect	V-ing perfect
oughtn't I to have boiled? oughtn't you to have boiled? oughtn't she to have boiled? oughtn't we to have boiled? oughtn't you to have boiled? oughtn't they to have boiled?	oughtn't I to have been boiling? oughtn't you to have been boiling? oughtn't she to have been boiling? oughtn't we to have been boiling? oughtn't you to have been boiling? oughtn't they to have been boiling?