must undercool
Verbe régulier : undercool - undercooled- undercooled

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must undercool
you must undercool
he must undercool
we must undercool
you must undercool
they must undercool 	I must be undercooling
you must be undercooling
he must be undercooling
we must be undercooling
you must be undercooling
they must be undercooling	I must have undercooled
you must have undercooled
he must have undercooled
we must have undercooled
you must have undercooled
they must have undercooled	I must have been undercooling
you must have been undercooling
he must have been undercooling
we must have been undercooling
you must have been undercooling
they must have been undercooling	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't undercool
you mustn't undercool
he mustn't undercool
we mustn't undercool
you mustn't undercool
they mustn't undercool 	I mustn't be undercooling
you mustn't be undercooling
he mustn't be undercooling
we mustn't be undercooling
you mustn't be undercooling
they mustn't be undercooling	I mustn't have undercooled
you mustn't have undercooled
he mustn't have undercooled
we mustn't have undercooled
you mustn't have undercooled
they mustn't have undercooled	I mustn't have been undercooling
you mustn't have been undercooling
he mustn't have been undercooling
we mustn't have been undercooling
you mustn't have been undercooling
they mustn't have been undercooling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I undercool?
must you undercool?
must he undercool?
must we undercool?
must you undercool?
must they undercool? 	must I be undercooling?
must you be undercooling?
must he be undercooling?
must we be undercooling?
must you be undercooling?
must they be undercooling? 	must I have undercooled?
must you have undercooled?
must he have undercooled?
must we have undercooled?
must you have undercooled?
must they have undercooled? 	must I have been undercooling?
must you have been undercooling?
must he have been undercooling?
must we have been undercooling?
must you have been undercooling?
must they have been undercooling? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I undercool?
mustn't you undercool?
mustn't he undercool?
mustn't we undercool?
mustn't you undercool?
mustn't they undercool? 	mustn't I be undercooling?
mustn't you be undercooling?
mustn't he be undercooling?
mustn't we be undercooling?
mustn't you be undercooling?
mustn't they be undercooling? 	mustn't I have undercooled?
mustn't you have undercooled?
mustn't he have undercooled?
mustn't we have undercooled?
mustn't you have undercooled?
mustn't they have undercooled? 	mustn't I have been undercooling?
mustn't you have been undercooling?
mustn't he have been undercooling?
mustn't we have been undercooling?
mustn't you have been undercooling?
mustn't they have been undercooling?