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
she must undercool
we must undercool
you must undercool
they must undercool 	I must be undercooling
you must be undercooling
she must be undercooling
we must be undercooling
you must be undercooling
they must be undercooling	I must have undercooled
you must have undercooled
she 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
she 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 must not undercool
you must not undercool
she must not undercool
we must not undercool
you must not undercool
they must not undercool 	I must not be undercooling
you must not be undercooling
she must not be undercooling
we must not be undercooling
you must not be undercooling
they must not be undercooling	I must not have undercooled
you must not have undercooled
she must not have undercooled
we must not have undercooled
you must not have undercooled
they must not have undercooled	I must not have been undercooling
you must not have been undercooling
she must not have been undercooling
we must not have been undercooling
you must not have been undercooling
they must not have been undercooling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I undercool?
must you undercool?
must she undercool?
must we undercool?
must you undercool?
must they undercool? 	must I be undercooling?
must you be undercooling?
must she be undercooling?
must we be undercooling?
must you be undercooling?
must they be undercooling? 	must I have undercooled?
must you have undercooled?
must she 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 she 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 	
must I not undercool?
must you not undercool?
must she not undercool?
must we not undercool?
must you not undercool?
must they not undercool? 	must I not be undercooling?
must you not be undercooling?
must she not be undercooling?
must we not be undercooling?
must you not be undercooling?
must they not be undercooling? 	must I not have undercooled?
must you not have undercooled?
must she not have undercooled?
must we not have undercooled?
must you not have undercooled?
must they not have undercooled? 	must I not have been undercooling?
must you not have been undercooling?
must she not have been undercooling?
must we not have been undercooling?
must you not have been undercooling?
must they not have been undercooling?