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