English verb conjugation
OUGHT TO DECREASE

Regular verb: decrease - decreased - decreased

Affirmation

Simple form	V-ing form
I ought to decrease you ought to decrease he ought to decrease we ought to decrease you ought to decrease they ought to decrease	I ought to be decreasing you ought to be decreasing he ought to be decreasing we ought to be decreasing you ought to be decreasing they ought to be decreasing
Perfect	V-ing perfect
I ought to have decreased you ought to have decreased he ought to have decreased we ought to have decreased you ought to have decreased they ought to have decreased	I ought to have been decreasing you ought to have been decreasing he ought to have been decreasing we ought to have been decreasing you ought to have been decreasing they ought to have been decreasing

Negation

Simple form	V-ing form
I ought not to decrease you ought not to decrease he ought not to decrease we ought not to decrease you ought not to decrease they ought not to decrease	I ought not to decreasing you ought not to decreasing he ought not to decreasing we ought not to decreasing you ought not to decreasing they ought not to decreasing
Perfect	V-ing perfect
I ought not to have decreased you ought not to have decreased he ought not to have decreased we ought not to have decreased you ought not to have decreased they ought not to have decreased	I ought not to have been decreasing you ought not to have been decreasing he ought not to have been decreasing we ought not to have been decreasing you ought not to have been decreasing they ought not to have been decreasing

Interrogative form

Simple form	V-ing form
ought to I decrease? ought to you decrease? ought to he decrease? ought to we decrease? ought to you decrease? ought to they decrease?	ought to I be decreasing? ought to you be decreasing? ought to he be decreasing? ought to we be decreasing? ought to you be decreasing? ought to they be decreasing?
Perfect	V-ing perfect
ought to I have decreased? ought to you have decreased? ought to he have decreased? ought to we have decreased? ought to you have decreased? ought to they have decreased?	ought to I have been decreasing? ought to you have been decreasing? ought to he have been decreasing? ought to we have been decreasing? ought to you have been decreasing? ought to they have been decreasing?

Interro-negative form

Simple form	V-ing form
ought I not to decrease? ought you not to decrease? ought he not to decrease? ought we not to decrease? ought you not to decrease? ought they not to decrease?	ought I not to be decreasing? ought you not to be decreasing? ought he not to be decreasing? ought we not to be decreasing? ought you not to be decreasing? ought they not to be decreasing?
Perfect	V-ing perfect
ought I not to have decreased? ought you not to have decreased? ought he not to have decreased? ought we not to have decreased? ought you not to have decreased? ought they not to have decreased?	ought I not to have been decreasing? ought you not to have been decreasing? ought he not to have been decreasing? ought we not to have been decreasing? ought you not to have been decreasing? ought they not to have been decreasing?