must decussate
Verbe régulier : decussate - decussated- decussated

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must decussate
you must decussate
he must decussate
we must decussate
you must decussate
they must decussate 	I must be decussating
you must be decussating
he must be decussating
we must be decussating
you must be decussating
they must be decussating	I must have decussated
you must have decussated
he must have decussated
we must have decussated
you must have decussated
they must have decussated	I must have been decussating
you must have been decussating
he must have been decussating
we must have been decussating
you must have been decussating
they must have been decussating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not decussate
you must not decussate
he must not decussate
we must not decussate
you must not decussate
they must not decussate 	I must not be decussating
you must not be decussating
he must not be decussating
we must not be decussating
you must not be decussating
they must not be decussating	I must not have decussated
you must not have decussated
he must not have decussated
we must not have decussated
you must not have decussated
they must not have decussated	I must not have been decussating
you must not have been decussating
he must not have been decussating
we must not have been decussating
you must not have been decussating
they must not have been decussating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I decussate?
must you decussate?
must he decussate?
must we decussate?
must you decussate?
must they decussate? 	must I be decussating?
must you be decussating?
must he be decussating?
must we be decussating?
must you be decussating?
must they be decussating? 	must I have decussated?
must you have decussated?
must he have decussated?
must we have decussated?
must you have decussated?
must they have decussated? 	must I have been decussating?
must you have been decussating?
must he have been decussating?
must we have been decussating?
must you have been decussating?
must they have been decussating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not decussate?
must you not decussate?
must he not decussate?
must we not decussate?
must you not decussate?
must they not decussate? 	must I not be decussating?
must you not be decussating?
must he not be decussating?
must we not be decussating?
must you not be decussating?
must they not be decussating? 	must I not have decussated?
must you not have decussated?
must he not have decussated?
must we not have decussated?
must you not have decussated?
must they not have decussated? 	must I not have been decussating?
must you not have been decussating?
must he not have been decussating?
must we not have been decussating?
must you not have been decussating?
must they not have been decussating?