English verb conjugation
MUST TREE

Regular verb: tree - treed - treed

Affirmation

Simple form	V-ing form
I must tree you must tree he must tree we must tree you must tree they must tree	I must be treeing you must be treeing he must be treeing we must be treeing you must be treeing they must be treeing
Perfect	V-ing perfect
I must have treed you must have treed he must have treed we must have treed you must have treed they must have treed	I must have been treeing you must have been treeing he must have been treeing we must have been treeing you must have been treeing they must have been treeing

Negation

Simple form	V-ing form
I must not tree you must not tree he must not tree we must not tree you must not tree they must not tree	I must not be treeing you must not be treeing he must not be treeing we must not be treeing you must not be treeing they must not be treeing
Perfect	V-ing perfect
I must not have treed you must not have treed he must not have treed we must not have treed you must not have treed they must not have treed	I must not have been treeing you must not have been treeing he must not have been treeing we must not have been treeing you must not have been treeing they must not have been treeing

Interrogative form

Simple form	V-ing form
must I tree? must you tree? must he tree? must we tree? must you tree? must they tree?	must I be treeing? must you be treeing? must he be treeing? must we be treeing? must you be treeing? must they be treeing?
Perfect	V-ing perfect
must I have treed? must you have treed? must he have treed? must we have treed? must you have treed? must they have treed?	must I have been treeing? must you have been treeing? must he have been treeing? must we have been treeing? must you have been treeing? must they have been treeing?

Interro-negative form

Simple form	V-ing form
must I not tree? must you not tree? must he not tree? must we not tree? must you not tree? must they not tree?	must I not be treeing? must you not be treeing? must he not be treeing? must we not be treeing? must you not be treeing? must they not be treeing?
Perfect	V-ing perfect
must I not have treed? must you not have treed? must he not have treed? must we not have treed? must you not have treed? must they not have treed?	must I not have been treeing? must you not have been treeing? must he not have been treeing? must we not have been treeing? must you not have been treeing? must they not have been treeing?