Regular verb: think back - think backed - think backed
Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I ought to think back you ought to think back she ought to think back we ought to think back you ought to think back they ought to think back
V-ing form
I ought to be think backing you ought to be think backing she ought to be think backing we ought to be think backing you ought to be think backing they ought to be think backing
Perfect
I ought to have think backed you ought to have think backed she ought to have think backed we ought to have think backed you ought to have think backed they ought to have think backed
V-ing perfect
I ought to have been think backing you ought to have been think backing she ought to have been think backing we ought to have been think backing you ought to have been think backing they ought to have been think backing
Negation
Simple form
I ought not to think back you ought not to think back she ought not to think back we ought not to think back you ought not to think back they ought not to think back
V-ing form
I ought not to think backing you ought not to think backing she ought not to think backing we ought not to think backing you ought not to think backing they ought not to think backing
Perfect
I ought not to have think backed you ought not to have think backed she ought not to have think backed we ought not to have think backed you ought not to have think backed they ought not to have think backed
V-ing perfect
I ought not to have been think backing you ought not to have been think backing she ought not to have been think backing we ought not to have been think backing you ought not to have been think backing they ought not to have been think backing
Interrogative form
Simple form
ought to I think back? ought to you think back? ought to she think back? ought to we think back? ought to you think back? ought to they think back?
V-ing form
ought to I be think backing? ought to you be think backing? ought to she be think backing? ought to we be think backing? ought to you be think backing? ought to they be think backing?
Perfect
ought to I have think backed? ought to you have think backed? ought to she have think backed? ought to we have think backed? ought to you have think backed? ought to they have think backed?
V-ing perfect
ought to I have been think backing? ought to you have been think backing? ought to she have been think backing? ought to we have been think backing? ought to you have been think backing? ought to they have been think backing?
Interro-negative form
Simple form
ought I not to think back? ought you not to think back? ought she not to think back? ought we not to think back? ought you not to think back? ought they not to think back?
V-ing form
ought I not to be think backing? ought you not to be think backing? ought she not to be think backing? ought we not to be think backing? ought you not to be think backing? ought they not to be think backing?
Perfect
ought I not to have think backed? ought you not to have think backed? ought she not to have think backed? ought we not to have think backed? ought you not to have think backed? ought they not to have think backed?
V-ing perfect
ought I not to have been think backing? ought you not to have been think backing? ought she not to have been think backing? ought we not to have been think backing? ought you not to have been think backing? ought they not to have been think backing?