must skive
Regular verb: skive - skived- skived

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must skive
you must skive
she must skive
we must skive
you must skive
they must skive 	I must be skiving
you must be skiving
she must be skiving
we must be skiving
you must be skiving
they must be skiving	I must have skived
you must have skived
she must have skived
we must have skived
you must have skived
they must have skived	I must have been skiving
you must have been skiving
she must have been skiving
we must have been skiving
you must have been skiving
they must have been skiving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't skive
you mustn't skive
she mustn't skive
we mustn't skive
you mustn't skive
they mustn't skive 	I mustn't be skiving
you mustn't be skiving
she mustn't be skiving
we mustn't be skiving
you mustn't be skiving
they mustn't be skiving	I mustn't have skived
you mustn't have skived
she mustn't have skived
we mustn't have skived
you mustn't have skived
they mustn't have skived	I mustn't have been skiving
you mustn't have been skiving
she mustn't have been skiving
we mustn't have been skiving
you mustn't have been skiving
they mustn't have been skiving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I skive?
must you skive?
must she skive?
must we skive?
must you skive?
must they skive? 	must I be skiving?
must you be skiving?
must she be skiving?
must we be skiving?
must you be skiving?
must they be skiving? 	must I have skived?
must you have skived?
must she have skived?
must we have skived?
must you have skived?
must they have skived? 	must I have been skiving?
must you have been skiving?
must she have been skiving?
must we have been skiving?
must you have been skiving?
must they have been skiving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I skive?
mustn't you skive?
mustn't she skive?
mustn't we skive?
mustn't you skive?
mustn't they skive? 	mustn't I be skiving?
mustn't you be skiving?
mustn't she be skiving?
mustn't we be skiving?
mustn't you be skiving?
mustn't they be skiving? 	mustn't I have skived?
mustn't you have skived?
mustn't she have skived?
mustn't we have skived?
mustn't you have skived?
mustn't they have skived? 	mustn't I have been skiving?
mustn't you have been skiving?
mustn't she have been skiving?
mustn't we have been skiving?
mustn't you have been skiving?
mustn't they have been skiving?