must unbind
Irregular verb: unbind - unbound- unbound

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must unbind
you must unbind
he must unbind
we must unbind
you must unbind
they must unbind 	I must be unbinding
you must be unbinding
he must be unbinding
we must be unbinding
you must be unbinding
they must be unbinding	I must have unbound
you must have unbound
he must have unbound
we must have unbound
you must have unbound
they must have unbound	I must have been unbinding
you must have been unbinding
he must have been unbinding
we must have been unbinding
you must have been unbinding
they must have been unbinding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not unbind
you must not unbind
he must not unbind
we must not unbind
you must not unbind
they must not unbind 	I must not be unbinding
you must not be unbinding
he must not be unbinding
we must not be unbinding
you must not be unbinding
they must not be unbinding	I must not have unbound
you must not have unbound
he must not have unbound
we must not have unbound
you must not have unbound
they must not have unbound	I must not have been unbinding
you must not have been unbinding
he must not have been unbinding
we must not have been unbinding
you must not have been unbinding
they must not have been unbinding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I unbind?
must you unbind?
must he unbind?
must we unbind?
must you unbind?
must they unbind? 	must I be unbinding?
must you be unbinding?
must he be unbinding?
must we be unbinding?
must you be unbinding?
must they be unbinding? 	must I have unbound?
must you have unbound?
must he have unbound?
must we have unbound?
must you have unbound?
must they have unbound? 	must I have been unbinding?
must you have been unbinding?
must he have been unbinding?
must we have been unbinding?
must you have been unbinding?
must they have been unbinding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not unbind?
must you not unbind?
must he not unbind?
must we not unbind?
must you not unbind?
must they not unbind? 	must I not be unbinding?
must you not be unbinding?
must he not be unbinding?
must we not be unbinding?
must you not be unbinding?
must they not be unbinding? 	must I not have unbound?
must you not have unbound?
must he not have unbound?
must we not have unbound?
must you not have unbound?
must they not have unbound? 	must I not have been unbinding?
must you not have been unbinding?
must he not have been unbinding?
must we not have been unbinding?
must you not have been unbinding?
must they not have been unbinding?