must scar
Regular verb: scar - scarred- scarred

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must scar
you must scar
she must scar
we must scar
you must scar
they must scar 	I must be scarring
you must be scarring
she must be scarring
we must be scarring
you must be scarring
they must be scarring	I must have scarred
you must have scarred
she must have scarred
we must have scarred
you must have scarred
they must have scarred	I must have been scarring
you must have been scarring
she must have been scarring
we must have been scarring
you must have been scarring
they must have been scarring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't scar
you mustn't scar
she mustn't scar
we mustn't scar
you mustn't scar
they mustn't scar 	I mustn't be scarring
you mustn't be scarring
she mustn't be scarring
we mustn't be scarring
you mustn't be scarring
they mustn't be scarring	I mustn't have scarred
you mustn't have scarred
she mustn't have scarred
we mustn't have scarred
you mustn't have scarred
they mustn't have scarred	I mustn't have been scarring
you mustn't have been scarring
she mustn't have been scarring
we mustn't have been scarring
you mustn't have been scarring
they mustn't have been scarring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I scar?
must you scar?
must she scar?
must we scar?
must you scar?
must they scar? 	must I be scarring?
must you be scarring?
must she be scarring?
must we be scarring?
must you be scarring?
must they be scarring? 	must I have scarred?
must you have scarred?
must she have scarred?
must we have scarred?
must you have scarred?
must they have scarred? 	must I have been scarring?
must you have been scarring?
must she have been scarring?
must we have been scarring?
must you have been scarring?
must they have been scarring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I scar?
mustn't you scar?
mustn't she scar?
mustn't we scar?
mustn't you scar?
mustn't they scar? 	mustn't I be scarring?
mustn't you be scarring?
mustn't she be scarring?
mustn't we be scarring?
mustn't you be scarring?
mustn't they be scarring? 	mustn't I have scarred?
mustn't you have scarred?
mustn't she have scarred?
mustn't we have scarred?
mustn't you have scarred?
mustn't they have scarred? 	mustn't I have been scarring?
mustn't you have been scarring?
mustn't she have been scarring?
mustn't we have been scarring?
mustn't you have been scarring?
mustn't they have been scarring?