English verb conjugation
OUGHT TO CURDLE

Regular verb: curdle - curdled - curdled

Affirmation

Simple form	V-ing form
I ought to curdle you ought to curdle she ought to curdle we ought to curdle you ought to curdle they ought to curdle	I ought to be curdling you ought to be curdling she ought to be curdling we ought to be curdling you ought to be curdling they ought to be curdling
Perfect	V-ing perfect
I ought to have curdled you ought to have curdled she ought to have curdled we ought to have curdled you ought to have curdled they ought to have curdled	I ought to have been curdling you ought to have been curdling she ought to have been curdling we ought to have been curdling you ought to have been curdling they ought to have been curdling

Negation

Simple form	V-ing form
I oughtn't to curdle you oughtn't to curdle she oughtn't to curdle we oughtn't to curdle you oughtn't to curdle they oughtn't to curdle	I oughtn't to be curdling you oughtn't to be curdling she oughtn't to be curdling we oughtn't to be curdling you oughtn't to be curdling they oughtn't to be curdling
Perfect	V-ing perfect
I oughtn't to have curdled you oughtn't to have curdled she oughtn't to have curdled we oughtn't to have curdled you oughtn't to have curdled they oughtn't to have curdled	I oughtn't to have been curdling you oughtn't to have been curdling she oughtn't to have been curdling we oughtn't to have been curdling you oughtn't to have been curdling they oughtn't to have been curdling

Interrogative form

Simple form	V-ing form
ought to I curdle? ought to you curdle? ought to she curdle? ought to we curdle? ought to you curdle? ought to they curdle?	ought to I be curdling? ought to you be curdling? ought to she be curdling? ought to we be curdling? ought to you be curdling? ought to they be curdling?
Perfect	V-ing perfect
ought to I have curdled? ought to you have curdled? ought to she have curdled? ought to we have curdled? ought to you have curdled? ought to they have curdled?	ought to I have been curdling? ought to you have been curdling? ought to she have been curdling? ought to we have been curdling? ought to you have been curdling? ought to they have been curdling?

Interro-negative form

Simple form	V-ing form
oughtn't I to curdle? oughtn't you to curdle? oughtn't she to curdle? oughtn't we to curdle? oughtn't you to curdle? oughtn't they to curdle?	oughtn't I to be curdling? oughtn't you to be curdling? oughtn't she to be curdling? oughtn't we to be curdling? oughtn't you to be curdling? oughtn't they to be curdling?
Perfect	V-ing perfect
oughtn't I to have curdled? oughtn't you to have curdled? oughtn't she to have curdled? oughtn't we to have curdled? oughtn't you to have curdled? oughtn't they to have curdled?	oughtn't I to have been curdling? oughtn't you to have been curdling? oughtn't she to have been curdling? oughtn't we to have been curdling? oughtn't you to have been curdling? oughtn't they to have been curdling?