must unfold
Regular verb: unfold - unfolded- unfolded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must unfold
you must unfold
she must unfold
we must unfold
you must unfold
they must unfold 	I must be unfolding
you must be unfolding
she must be unfolding
we must be unfolding
you must be unfolding
they must be unfolding	I must have unfolded
you must have unfolded
she must have unfolded
we must have unfolded
you must have unfolded
they must have unfolded	I must have been unfolding
you must have been unfolding
she must have been unfolding
we must have been unfolding
you must have been unfolding
they must have been unfolding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not unfold
you must not unfold
she must not unfold
we must not unfold
you must not unfold
they must not unfold 	I must not be unfolding
you must not be unfolding
she must not be unfolding
we must not be unfolding
you must not be unfolding
they must not be unfolding	I must not have unfolded
you must not have unfolded
she must not have unfolded
we must not have unfolded
you must not have unfolded
they must not have unfolded	I must not have been unfolding
you must not have been unfolding
she must not have been unfolding
we must not have been unfolding
you must not have been unfolding
they must not have been unfolding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I unfold?
must you unfold?
must she unfold?
must we unfold?
must you unfold?
must they unfold? 	must I be unfolding?
must you be unfolding?
must she be unfolding?
must we be unfolding?
must you be unfolding?
must they be unfolding? 	must I have unfolded?
must you have unfolded?
must she have unfolded?
must we have unfolded?
must you have unfolded?
must they have unfolded? 	must I have been unfolding?
must you have been unfolding?
must she have been unfolding?
must we have been unfolding?
must you have been unfolding?
must they have been unfolding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not unfold?
must you not unfold?
must she not unfold?
must we not unfold?
must you not unfold?
must they not unfold? 	must I not be unfolding?
must you not be unfolding?
must she not be unfolding?
must we not be unfolding?
must you not be unfolding?
must they not be unfolding? 	must I not have unfolded?
must you not have unfolded?
must she not have unfolded?
must we not have unfolded?
must you not have unfolded?
must they not have unfolded? 	must I not have been unfolding?
must you not have been unfolding?
must she not have been unfolding?
must we not have been unfolding?
must you not have been unfolding?
must they not have been unfolding?