must cold-pack
Verbo regular: cold-pack - cold-packed- cold-packed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must cold-pack
you must cold-pack
he must cold-pack
we must cold-pack
you must cold-pack
they must cold-pack 	I must be cold-packing
you must be cold-packing
he must be cold-packing
we must be cold-packing
you must be cold-packing
they must be cold-packing	I must have cold-packed
you must have cold-packed
he must have cold-packed
we must have cold-packed
you must have cold-packed
they must have cold-packed	I must have been cold-packing
you must have been cold-packing
he must have been cold-packing
we must have been cold-packing
you must have been cold-packing
they must have been cold-packing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not cold-pack
you must not cold-pack
he must not cold-pack
we must not cold-pack
you must not cold-pack
they must not cold-pack 	I must not be cold-packing
you must not be cold-packing
he must not be cold-packing
we must not be cold-packing
you must not be cold-packing
they must not be cold-packing	I must not have cold-packed
you must not have cold-packed
he must not have cold-packed
we must not have cold-packed
you must not have cold-packed
they must not have cold-packed	I must not have been cold-packing
you must not have been cold-packing
he must not have been cold-packing
we must not have been cold-packing
you must not have been cold-packing
they must not have been cold-packing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I cold-pack?
must you cold-pack?
must he cold-pack?
must we cold-pack?
must you cold-pack?
must they cold-pack? 	must I be cold-packing?
must you be cold-packing?
must he be cold-packing?
must we be cold-packing?
must you be cold-packing?
must they be cold-packing? 	must I have cold-packed?
must you have cold-packed?
must he have cold-packed?
must we have cold-packed?
must you have cold-packed?
must they have cold-packed? 	must I have been cold-packing?
must you have been cold-packing?
must he have been cold-packing?
must we have been cold-packing?
must you have been cold-packing?
must they have been cold-packing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not cold-pack?
must you not cold-pack?
must he not cold-pack?
must we not cold-pack?
must you not cold-pack?
must they not cold-pack? 	must I not be cold-packing?
must you not be cold-packing?
must he not be cold-packing?
must we not be cold-packing?
must you not be cold-packing?
must they not be cold-packing? 	must I not have cold-packed?
must you not have cold-packed?
must he not have cold-packed?
must we not have cold-packed?
must you not have cold-packed?
must they not have cold-packed? 	must I not have been cold-packing?
must you not have been cold-packing?
must he not have been cold-packing?
must we not have been cold-packing?
must you not have been cold-packing?
must they not have been cold-packing?