English verb conjugation
OUGHT TO SCREEN

Regular verb: screen - screened - screened

Affirmation

Simple form	V-ing form
I ought to screen you ought to screen he ought to screen we ought to screen you ought to screen they ought to screen	I ought to be screening you ought to be screening he ought to be screening we ought to be screening you ought to be screening they ought to be screening
Perfect	V-ing perfect
I ought to have screened you ought to have screened he ought to have screened we ought to have screened you ought to have screened they ought to have screened	I ought to have been screening you ought to have been screening he ought to have been screening we ought to have been screening you ought to have been screening they ought to have been screening

Negation

Simple form	V-ing form
I ought not to screen you ought not to screen he ought not to screen we ought not to screen you ought not to screen they ought not to screen	I ought not to screening you ought not to screening he ought not to screening we ought not to screening you ought not to screening they ought not to screening
Perfect	V-ing perfect
I ought not to have screened you ought not to have screened he ought not to have screened we ought not to have screened you ought not to have screened they ought not to have screened	I ought not to have been screening you ought not to have been screening he ought not to have been screening we ought not to have been screening you ought not to have been screening they ought not to have been screening

Interrogative form

Simple form	V-ing form
ought to I screen? ought to you screen? ought to he screen? ought to we screen? ought to you screen? ought to they screen?	ought to I be screening? ought to you be screening? ought to he be screening? ought to we be screening? ought to you be screening? ought to they be screening?
Perfect	V-ing perfect
ought to I have screened? ought to you have screened? ought to he have screened? ought to we have screened? ought to you have screened? ought to they have screened?	ought to I have been screening? ought to you have been screening? ought to he have been screening? ought to we have been screening? ought to you have been screening? ought to they have been screening?

Interro-negative form

Simple form	V-ing form
ought I not to screen? ought you not to screen? ought he not to screen? ought we not to screen? ought you not to screen? ought they not to screen?	ought I not to be screening? ought you not to be screening? ought he not to be screening? ought we not to be screening? ought you not to be screening? ought they not to be screening?
Perfect	V-ing perfect
ought I not to have screened? ought you not to have screened? ought he not to have screened? ought we not to have screened? ought you not to have screened? ought they not to have screened?	ought I not to have been screening? ought you not to have been screening? ought he not to have been screening? ought we not to have been screening? ought you not to have been screening? ought they not to have been screening?