English verb conjugation
OUGHT TO STIFF

Regular verb: stiff - stiffed - stiffed

Affirmation

Simple form	V-ing form
I ought to stiff you ought to stiff he ought to stiff we ought to stiff you ought to stiff they ought to stiff	I ought to be stiffing you ought to be stiffing he ought to be stiffing we ought to be stiffing you ought to be stiffing they ought to be stiffing
Perfect	V-ing perfect
I ought to have stiffed you ought to have stiffed he ought to have stiffed we ought to have stiffed you ought to have stiffed they ought to have stiffed	I ought to have been stiffing you ought to have been stiffing he ought to have been stiffing we ought to have been stiffing you ought to have been stiffing they ought to have been stiffing

Negation

Simple form	V-ing form
I ought not to stiff you ought not to stiff he ought not to stiff we ought not to stiff you ought not to stiff they ought not to stiff	I ought not to stiffing you ought not to stiffing he ought not to stiffing we ought not to stiffing you ought not to stiffing they ought not to stiffing
Perfect	V-ing perfect
I ought not to have stiffed you ought not to have stiffed he ought not to have stiffed we ought not to have stiffed you ought not to have stiffed they ought not to have stiffed	I ought not to have been stiffing you ought not to have been stiffing he ought not to have been stiffing we ought not to have been stiffing you ought not to have been stiffing they ought not to have been stiffing

Interrogative form

Simple form	V-ing form
ought to I stiff? ought to you stiff? ought to he stiff? ought to we stiff? ought to you stiff? ought to they stiff?	ought to I be stiffing? ought to you be stiffing? ought to he be stiffing? ought to we be stiffing? ought to you be stiffing? ought to they be stiffing?
Perfect	V-ing perfect
ought to I have stiffed? ought to you have stiffed? ought to he have stiffed? ought to we have stiffed? ought to you have stiffed? ought to they have stiffed?	ought to I have been stiffing? ought to you have been stiffing? ought to he have been stiffing? ought to we have been stiffing? ought to you have been stiffing? ought to they have been stiffing?

Interro-negative form

Simple form	V-ing form
ought I not to stiff? ought you not to stiff? ought he not to stiff? ought we not to stiff? ought you not to stiff? ought they not to stiff?	ought I not to be stiffing? ought you not to be stiffing? ought he not to be stiffing? ought we not to be stiffing? ought you not to be stiffing? ought they not to be stiffing?
Perfect	V-ing perfect
ought I not to have stiffed? ought you not to have stiffed? ought he not to have stiffed? ought we not to have stiffed? ought you not to have stiffed? ought they not to have stiffed?	ought I not to have been stiffing? ought you not to have been stiffing? ought he not to have been stiffing? ought we not to have been stiffing? ought you not to have been stiffing? ought they not to have been stiffing?