I must deviate you must deviate he must deviate we must deviate you must deviate they must deviate
V-ing form
I must be deviating you must be deviating he must be deviating we must be deviating you must be deviating they must be deviating
Perfect
I must have deviated you must have deviated he must have deviated we must have deviated you must have deviated they must have deviated
V-ing perfect
I must have been deviating you must have been deviating he must have been deviating we must have been deviating you must have been deviating they must have been deviating
Negation
Simple form
I mustn't deviate you mustn't deviate he mustn't deviate we mustn't deviate you mustn't deviate they mustn't deviate
V-ing form
I mustn't be deviating you mustn't be deviating he mustn't be deviating we mustn't be deviating you mustn't be deviating they mustn't be deviating
Perfect
I mustn't have deviated you mustn't have deviated he mustn't have deviated we mustn't have deviated you mustn't have deviated they mustn't have deviated
V-ing perfect
I mustn't have been deviating you mustn't have been deviating he mustn't have been deviating we mustn't have been deviating you mustn't have been deviating they mustn't have been deviating
Interrogative form
Simple form
must I deviate? must you deviate? must he deviate? must we deviate? must you deviate? must they deviate?
V-ing form
must I be deviating? must you be deviating? must he be deviating? must we be deviating? must you be deviating? must they be deviating?
Perfect
must I have deviated? must you have deviated? must he have deviated? must we have deviated? must you have deviated? must they have deviated?
V-ing perfect
must I have been deviating? must you have been deviating? must he have been deviating? must we have been deviating? must you have been deviating? must they have been deviating?
Interro-negative form
Simple form
mustn't I deviate? mustn't you deviate? mustn't he deviate? mustn't we deviate? mustn't you deviate? mustn't they deviate?
V-ing form
mustn't I be deviating? mustn't you be deviating? mustn't he be deviating? mustn't we be deviating? mustn't you be deviating? mustn't they be deviating?
Perfect
mustn't I have deviated? mustn't you have deviated? mustn't he have deviated? mustn't we have deviated? mustn't you have deviated? mustn't they have deviated?
V-ing perfect
mustn't I have been deviating? mustn't you have been deviating? mustn't he have been deviating? mustn't we have been deviating? mustn't you have been deviating? mustn't they have been deviating?