must interleave
Verbe régulier : interleave - interleaved- interleaved
Traduction française : interfolier - intercaler 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must interleave
you must interleave
he must interleave
we must interleave
you must interleave
they must interleave 	I must be interleaving
you must be interleaving
he must be interleaving
we must be interleaving
you must be interleaving
they must be interleaving	I must have interleaved
you must have interleaved
he must have interleaved
we must have interleaved
you must have interleaved
they must have interleaved	I must have been interleaving
you must have been interleaving
he must have been interleaving
we must have been interleaving
you must have been interleaving
they must have been interleaving	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not interleave
you must not interleave
he must not interleave
we must not interleave
you must not interleave
they must not interleave 	I must not be interleaving
you must not be interleaving
he must not be interleaving
we must not be interleaving
you must not be interleaving
they must not be interleaving	I must not have interleaved
you must not have interleaved
he must not have interleaved
we must not have interleaved
you must not have interleaved
they must not have interleaved	I must not have been interleaving
you must not have been interleaving
he must not have been interleaving
we must not have been interleaving
you must not have been interleaving
they must not have been interleaving	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I interleave?
must you interleave?
must he interleave?
must we interleave?
must you interleave?
must they interleave? 	must I be interleaving?
must you be interleaving?
must he be interleaving?
must we be interleaving?
must you be interleaving?
must they be interleaving? 	must I have interleaved?
must you have interleaved?
must he have interleaved?
must we have interleaved?
must you have interleaved?
must they have interleaved? 	must I have been interleaving?
must you have been interleaving?
must he have been interleaving?
must we have been interleaving?
must you have been interleaving?
must they have been interleaving? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not interleave?
must you not interleave?
must he not interleave?
must we not interleave?
must you not interleave?
must they not interleave? 	must I not be interleaving?
must you not be interleaving?
must he not be interleaving?
must we not be interleaving?
must you not be interleaving?
must they not be interleaving? 	must I not have interleaved?
must you not have interleaved?
must he not have interleaved?
must we not have interleaved?
must you not have interleaved?
must they not have interleaved? 	must I not have been interleaving?
must you not have been interleaving?
must he not have been interleaving?
must we not have been interleaving?
must you not have been interleaving?
must they not have been interleaving?