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 must not countenance you must not countenance he must not countenance we must not countenance you must not countenance they must not countenance	I must not be countenancing you must not be countenancing he must not be countenancing we must not be countenancing you must not be countenancing they must not be countenancing
Perfect	V-ing perfect
I must not have countenanced you must not have countenanced he must not have countenanced we must not have countenanced you must not have countenanced they must not have countenanced	I must not have been countenancing you must not have been countenancing he must not have been countenancing we must not have been countenancing you must not have been countenancing they must not 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
must I not countenance? must you not countenance? must he not countenance? must we not countenance? must you not countenance? must they not countenance?	must I not be countenancing? must you not be countenancing? must he not be countenancing? must we not be countenancing? must you not be countenancing? must they not be countenancing?
Perfect	V-ing perfect
must I not have countenanced? must you not have countenanced? must he not have countenanced? must we not have countenanced? must you not have countenanced? must they not have countenanced?	must I not have been countenancing? must you not have been countenancing? must he not have been countenancing? must we not have been countenancing? must you not have been countenancing? must they not have been countenancing?