must obtund
Verbe régulier : obtund - obtunded- obtunded

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must obtund
you must obtund
he must obtund
we must obtund
you must obtund
they must obtund 	I must be obtunding
you must be obtunding
he must be obtunding
we must be obtunding
you must be obtunding
they must be obtunding	I must have obtunded
you must have obtunded
he must have obtunded
we must have obtunded
you must have obtunded
they must have obtunded	I must have been obtunding
you must have been obtunding
he must have been obtunding
we must have been obtunding
you must have been obtunding
they must have been obtunding	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not obtund
you must not obtund
he must not obtund
we must not obtund
you must not obtund
they must not obtund 	I must not be obtunding
you must not be obtunding
he must not be obtunding
we must not be obtunding
you must not be obtunding
they must not be obtunding	I must not have obtunded
you must not have obtunded
he must not have obtunded
we must not have obtunded
you must not have obtunded
they must not have obtunded	I must not have been obtunding
you must not have been obtunding
he must not have been obtunding
we must not have been obtunding
you must not have been obtunding
they must not have been obtunding	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I obtund?
must you obtund?
must he obtund?
must we obtund?
must you obtund?
must they obtund? 	must I be obtunding?
must you be obtunding?
must he be obtunding?
must we be obtunding?
must you be obtunding?
must they be obtunding? 	must I have obtunded?
must you have obtunded?
must he have obtunded?
must we have obtunded?
must you have obtunded?
must they have obtunded? 	must I have been obtunding?
must you have been obtunding?
must he have been obtunding?
must we have been obtunding?
must you have been obtunding?
must they have been obtunding? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not obtund?
must you not obtund?
must he not obtund?
must we not obtund?
must you not obtund?
must they not obtund? 	must I not be obtunding?
must you not be obtunding?
must he not be obtunding?
must we not be obtunding?
must you not be obtunding?
must they not be obtunding? 	must I not have obtunded?
must you not have obtunded?
must he not have obtunded?
must we not have obtunded?
must you not have obtunded?
must they not have obtunded? 	must I not have been obtunding?
must you not have been obtunding?
must he not have been obtunding?
must we not have been obtunding?
must you not have been obtunding?
must they not have been obtunding?