must tree
Verbo regolare: tree - treed- treed

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
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	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	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must not tree
you must not tree
she 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
she must not be treeing
we must not be treeing
you must not be treeing
they must not be treeing	I must not have treed
you must not have treed
she 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
she must not have been treeing
we must not have been treeing
you must not have been treeing
they must not have been treeing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
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? 	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? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I not tree?
must you not tree?
must she 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 she not be treeing?
must we not be treeing?
must you not be treeing?
must they not be treeing? 	must I not have treed?
must you not have treed?
must she 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 she not have been treeing?
must we not have been treeing?
must you not have been treeing?
must they not have been treeing?