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