must unsling
Irregular verb: unsling - unslung- unslung

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must unsling
you must unsling
he must unsling
we must unsling
you must unsling
they must unsling 	I must be unslinging
you must be unslinging
he must be unslinging
we must be unslinging
you must be unslinging
they must be unslinging	I must have unslung
you must have unslung
he must have unslung
we must have unslung
you must have unslung
they must have unslung	I must have been unslinging
you must have been unslinging
he must have been unslinging
we must have been unslinging
you must have been unslinging
they must have been unslinging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't unsling
you mustn't unsling
he mustn't unsling
we mustn't unsling
you mustn't unsling
they mustn't unsling 	I mustn't be unslinging
you mustn't be unslinging
he mustn't be unslinging
we mustn't be unslinging
you mustn't be unslinging
they mustn't be unslinging	I mustn't have unslung
you mustn't have unslung
he mustn't have unslung
we mustn't have unslung
you mustn't have unslung
they mustn't have unslung	I mustn't have been unslinging
you mustn't have been unslinging
he mustn't have been unslinging
we mustn't have been unslinging
you mustn't have been unslinging
they mustn't have been unslinging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I unsling?
must you unsling?
must he unsling?
must we unsling?
must you unsling?
must they unsling? 	must I be unslinging?
must you be unslinging?
must he be unslinging?
must we be unslinging?
must you be unslinging?
must they be unslinging? 	must I have unslung?
must you have unslung?
must he have unslung?
must we have unslung?
must you have unslung?
must they have unslung? 	must I have been unslinging?
must you have been unslinging?
must he have been unslinging?
must we have been unslinging?
must you have been unslinging?
must they have been unslinging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I unsling?
mustn't you unsling?
mustn't he unsling?
mustn't we unsling?
mustn't you unsling?
mustn't they unsling? 	mustn't I be unslinging?
mustn't you be unslinging?
mustn't he be unslinging?
mustn't we be unslinging?
mustn't you be unslinging?
mustn't they be unslinging? 	mustn't I have unslung?
mustn't you have unslung?
mustn't he have unslung?
mustn't we have unslung?
mustn't you have unslung?
mustn't they have unslung? 	mustn't I have been unslinging?
mustn't you have been unslinging?
mustn't he have been unslinging?
mustn't we have been unslinging?
mustn't you have been unslinging?
mustn't they have been unslinging?