must spurn
Regular verb: spurn - spurned- spurned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must spurn
you must spurn
she must spurn
we must spurn
you must spurn
they must spurn 	I must be spurning
you must be spurning
she must be spurning
we must be spurning
you must be spurning
they must be spurning	I must have spurned
you must have spurned
she must have spurned
we must have spurned
you must have spurned
they must have spurned	I must have been spurning
you must have been spurning
she must have been spurning
we must have been spurning
you must have been spurning
they must have been spurning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't spurn
you mustn't spurn
she mustn't spurn
we mustn't spurn
you mustn't spurn
they mustn't spurn 	I mustn't be spurning
you mustn't be spurning
she mustn't be spurning
we mustn't be spurning
you mustn't be spurning
they mustn't be spurning	I mustn't have spurned
you mustn't have spurned
she mustn't have spurned
we mustn't have spurned
you mustn't have spurned
they mustn't have spurned	I mustn't have been spurning
you mustn't have been spurning
she mustn't have been spurning
we mustn't have been spurning
you mustn't have been spurning
they mustn't have been spurning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I spurn?
must you spurn?
must she spurn?
must we spurn?
must you spurn?
must they spurn? 	must I be spurning?
must you be spurning?
must she be spurning?
must we be spurning?
must you be spurning?
must they be spurning? 	must I have spurned?
must you have spurned?
must she have spurned?
must we have spurned?
must you have spurned?
must they have spurned? 	must I have been spurning?
must you have been spurning?
must she have been spurning?
must we have been spurning?
must you have been spurning?
must they have been spurning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I spurn?
mustn't you spurn?
mustn't she spurn?
mustn't we spurn?
mustn't you spurn?
mustn't they spurn? 	mustn't I be spurning?
mustn't you be spurning?
mustn't she be spurning?
mustn't we be spurning?
mustn't you be spurning?
mustn't they be spurning? 	mustn't I have spurned?
mustn't you have spurned?
mustn't she have spurned?
mustn't we have spurned?
mustn't you have spurned?
mustn't they have spurned? 	mustn't I have been spurning?
mustn't you have been spurning?
mustn't she have been spurning?
mustn't we have been spurning?
mustn't you have been spurning?
mustn't they have been spurning?