English verb conjugation
MUST COUNTENANCE

Regular verb: countenance - countenanced - countenanced

Affirmation

Simple form	V-ing form
I must countenance you must countenance he must countenance we must countenance you must countenance they must countenance	I must be countenancing you must be countenancing he must be countenancing we must be countenancing you must be countenancing they must be countenancing
Perfect	V-ing perfect
I must have countenanced you must have countenanced he must have countenanced we must have countenanced you must have countenanced they must have countenanced	I must have been countenancing you must have been countenancing he must have been countenancing we must have been countenancing you must have been countenancing they must have been countenancing

Negation

Simple form	V-ing form
I mustn't countenance you mustn't countenance he mustn't countenance we mustn't countenance you mustn't countenance they mustn't countenance	I mustn't be countenancing you mustn't be countenancing he mustn't be countenancing we mustn't be countenancing you mustn't be countenancing they mustn't be countenancing
Perfect	V-ing perfect
I mustn't have countenanced you mustn't have countenanced he mustn't have countenanced we mustn't have countenanced you mustn't have countenanced they mustn't have countenanced	I mustn't have been countenancing you mustn't have been countenancing he mustn't have been countenancing we mustn't have been countenancing you mustn't have been countenancing they mustn't have been countenancing

Interrogative form

Simple form	V-ing form
must I countenance? must you countenance? must he countenance? must we countenance? must you countenance? must they countenance?	must I be countenancing? must you be countenancing? must he be countenancing? must we be countenancing? must you be countenancing? must they be countenancing?
Perfect	V-ing perfect
must I have countenanced? must you have countenanced? must he have countenanced? must we have countenanced? must you have countenanced? must they have countenanced?	must I have been countenancing? must you have been countenancing? must he have been countenancing? must we have been countenancing? must you have been countenancing? must they have been countenancing?

Interro-negative form

Simple form	V-ing form
mustn't I countenance? mustn't you countenance? mustn't he countenance? mustn't we countenance? mustn't you countenance? mustn't they countenance?	mustn't I be countenancing? mustn't you be countenancing? mustn't he be countenancing? mustn't we be countenancing? mustn't you be countenancing? mustn't they be countenancing?
Perfect	V-ing perfect
mustn't I have countenanced? mustn't you have countenanced? mustn't he have countenanced? mustn't we have countenanced? mustn't you have countenanced? mustn't they have countenanced?	mustn't I have been countenancing? mustn't you have been countenancing? mustn't he have been countenancing? mustn't we have been countenancing? mustn't you have been countenancing? mustn't they have been countenancing?