must unsnap
Regular verb: unsnap - unsnaped- unsnaped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must unsnap
you must unsnap
she must unsnap
we must unsnap
you must unsnap
they must unsnap 	I must be unsnaping
you must be unsnaping
she must be unsnaping
we must be unsnaping
you must be unsnaping
they must be unsnaping	I must have unsnaped
you must have unsnaped
she must have unsnaped
we must have unsnaped
you must have unsnaped
they must have unsnaped	I must have been unsnaping
you must have been unsnaping
she must have been unsnaping
we must have been unsnaping
you must have been unsnaping
they must have been unsnaping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not unsnap
you must not unsnap
she must not unsnap
we must not unsnap
you must not unsnap
they must not unsnap 	I must not be unsnaping
you must not be unsnaping
she must not be unsnaping
we must not be unsnaping
you must not be unsnaping
they must not be unsnaping	I must not have unsnaped
you must not have unsnaped
she must not have unsnaped
we must not have unsnaped
you must not have unsnaped
they must not have unsnaped	I must not have been unsnaping
you must not have been unsnaping
she must not have been unsnaping
we must not have been unsnaping
you must not have been unsnaping
they must not have been unsnaping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I unsnap?
must you unsnap?
must she unsnap?
must we unsnap?
must you unsnap?
must they unsnap? 	must I be unsnaping?
must you be unsnaping?
must she be unsnaping?
must we be unsnaping?
must you be unsnaping?
must they be unsnaping? 	must I have unsnaped?
must you have unsnaped?
must she have unsnaped?
must we have unsnaped?
must you have unsnaped?
must they have unsnaped? 	must I have been unsnaping?
must you have been unsnaping?
must she have been unsnaping?
must we have been unsnaping?
must you have been unsnaping?
must they have been unsnaping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not unsnap?
must you not unsnap?
must she not unsnap?
must we not unsnap?
must you not unsnap?
must they not unsnap? 	must I not be unsnaping?
must you not be unsnaping?
must she not be unsnaping?
must we not be unsnaping?
must you not be unsnaping?
must they not be unsnaping? 	must I not have unsnaped?
must you not have unsnaped?
must she not have unsnaped?
must we not have unsnaped?
must you not have unsnaped?
must they not have unsnaped? 	must I not have been unsnaping?
must you not have been unsnaping?
must she not have been unsnaping?
must we not have been unsnaping?
must you not have been unsnaping?
must they not have been unsnaping?