must sellotape
Regular verb: sellotape - sellotaped- sellotaped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must sellotape
you must sellotape
he must sellotape
we must sellotape
you must sellotape
they must sellotape 	I must be sellotaping
you must be sellotaping
he must be sellotaping
we must be sellotaping
you must be sellotaping
they must be sellotaping	I must have sellotaped
you must have sellotaped
he must have sellotaped
we must have sellotaped
you must have sellotaped
they must have sellotaped	I must have been sellotaping
you must have been sellotaping
he must have been sellotaping
we must have been sellotaping
you must have been sellotaping
they must have been sellotaping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't sellotape
you mustn't sellotape
he mustn't sellotape
we mustn't sellotape
you mustn't sellotape
they mustn't sellotape 	I mustn't be sellotaping
you mustn't be sellotaping
he mustn't be sellotaping
we mustn't be sellotaping
you mustn't be sellotaping
they mustn't be sellotaping	I mustn't have sellotaped
you mustn't have sellotaped
he mustn't have sellotaped
we mustn't have sellotaped
you mustn't have sellotaped
they mustn't have sellotaped	I mustn't have been sellotaping
you mustn't have been sellotaping
he mustn't have been sellotaping
we mustn't have been sellotaping
you mustn't have been sellotaping
they mustn't have been sellotaping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I sellotape?
must you sellotape?
must he sellotape?
must we sellotape?
must you sellotape?
must they sellotape? 	must I be sellotaping?
must you be sellotaping?
must he be sellotaping?
must we be sellotaping?
must you be sellotaping?
must they be sellotaping? 	must I have sellotaped?
must you have sellotaped?
must he have sellotaped?
must we have sellotaped?
must you have sellotaped?
must they have sellotaped? 	must I have been sellotaping?
must you have been sellotaping?
must he have been sellotaping?
must we have been sellotaping?
must you have been sellotaping?
must they have been sellotaping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I sellotape?
mustn't you sellotape?
mustn't he sellotape?
mustn't we sellotape?
mustn't you sellotape?
mustn't they sellotape? 	mustn't I be sellotaping?
mustn't you be sellotaping?
mustn't he be sellotaping?
mustn't we be sellotaping?
mustn't you be sellotaping?
mustn't they be sellotaping? 	mustn't I have sellotaped?
mustn't you have sellotaped?
mustn't he have sellotaped?
mustn't we have sellotaped?
mustn't you have sellotaped?
mustn't they have sellotaped? 	mustn't I have been sellotaping?
mustn't you have been sellotaping?
mustn't he have been sellotaping?
mustn't we have been sellotaping?
mustn't you have been sellotaping?
mustn't they have been sellotaping?