English verb conjugation
MUST TREE

Regular verb: tree - treed - treed

Affirmation

Simple form	V-ing form
I must tree you must tree she must tree we must tree you must tree they must tree	I must be treeing you must be treeing she 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 she 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 she 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 mustn't tree you mustn't tree she mustn't tree we mustn't tree you mustn't tree they mustn't tree	I mustn't be treeing you mustn't be treeing she mustn't be treeing we mustn't be treeing you mustn't be treeing they mustn't be treeing
Perfect	V-ing perfect
I mustn't have treed you mustn't have treed she mustn't have treed we mustn't have treed you mustn't have treed they mustn't have treed	I mustn't have been treeing you mustn't have been treeing she mustn't have been treeing we mustn't have been treeing you mustn't have been treeing they mustn't have been treeing

Interrogative form

Simple form	V-ing form
must I tree? must you tree? must she tree? must we tree? must you tree? must they tree?	must I be treeing? must you be treeing? must she 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 she 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 she 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
mustn't I tree? mustn't you tree? mustn't she tree? mustn't we tree? mustn't you tree? mustn't they tree?	mustn't I be treeing? mustn't you be treeing? mustn't she be treeing? mustn't we be treeing? mustn't you be treeing? mustn't they be treeing?
Perfect	V-ing perfect
mustn't I have treed? mustn't you have treed? mustn't she have treed? mustn't we have treed? mustn't you have treed? mustn't they have treed?	mustn't I have been treeing? mustn't you have been treeing? mustn't she have been treeing? mustn't we have been treeing? mustn't you have been treeing? mustn't they have been treeing?