English verb conjugation
OUGHT TO CHECK

Regular verb: check - checked - checked

Affirmation

Simple form	V-ing form
I ought to check you ought to check he ought to check we ought to check you ought to check they ought to check	I ought to be checking you ought to be checking he ought to be checking we ought to be checking you ought to be checking they ought to be checking
Perfect	V-ing perfect
I ought to have checked you ought to have checked he ought to have checked we ought to have checked you ought to have checked they ought to have checked	I ought to have been checking you ought to have been checking he ought to have been checking we ought to have been checking you ought to have been checking they ought to have been checking

Negation

Simple form	V-ing form
I ought not to check you ought not to check he ought not to check we ought not to check you ought not to check they ought not to check	I ought not to checking you ought not to checking he ought not to checking we ought not to checking you ought not to checking they ought not to checking
Perfect	V-ing perfect
I ought not to have checked you ought not to have checked he ought not to have checked we ought not to have checked you ought not to have checked they ought not to have checked	I ought not to have been checking you ought not to have been checking he ought not to have been checking we ought not to have been checking you ought not to have been checking they ought not to have been checking

Interrogative form

Simple form	V-ing form
ought to I check? ought to you check? ought to he check? ought to we check? ought to you check? ought to they check?	ought to I be checking? ought to you be checking? ought to he be checking? ought to we be checking? ought to you be checking? ought to they be checking?
Perfect	V-ing perfect
ought to I have checked? ought to you have checked? ought to he have checked? ought to we have checked? ought to you have checked? ought to they have checked?	ought to I have been checking? ought to you have been checking? ought to he have been checking? ought to we have been checking? ought to you have been checking? ought to they have been checking?

Interro-negative form

Simple form	V-ing form
ought I not to check? ought you not to check? ought he not to check? ought we not to check? ought you not to check? ought they not to check?	ought I not to be checking? ought you not to be checking? ought he not to be checking? ought we not to be checking? ought you not to be checking? ought they not to be checking?
Perfect	V-ing perfect
ought I not to have checked? ought you not to have checked? ought he not to have checked? ought we not to have checked? ought you not to have checked? ought they not to have checked?	ought I not to have been checking? ought you not to have been checking? ought he not to have been checking? ought we not to have been checking? ought you not to have been checking? ought they not to have been checking?