must cold-pack
Regular verb: cold-pack - cold-packed- cold-packed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must cold-pack
you must cold-pack
she 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
she 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
she 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
she must have been cold-packing
we must have been cold-packing
you must have been cold-packing
they must have been cold-packing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not cold-pack
you must not cold-pack
she 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
she 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
she 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
she 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	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I cold-pack?
must you cold-pack?
must she 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 she 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 she 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 she have been cold-packing?
must we have been cold-packing?
must you have been cold-packing?
must they have been cold-packing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not cold-pack?
must you not cold-pack?
must she 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 she 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 she 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 she 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?