must prise
Regular verb: prise - prised- prised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must prise
you must prise
he must prise
we must prise
you must prise
they must prise 	I must be prising
you must be prising
he must be prising
we must be prising
you must be prising
they must be prising	I must have prised
you must have prised
he must have prised
we must have prised
you must have prised
they must have prised	I must have been prising
you must have been prising
he must have been prising
we must have been prising
you must have been prising
they must have been prising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't prise
you mustn't prise
he mustn't prise
we mustn't prise
you mustn't prise
they mustn't prise 	I mustn't be prising
you mustn't be prising
he mustn't be prising
we mustn't be prising
you mustn't be prising
they mustn't be prising	I mustn't have prised
you mustn't have prised
he mustn't have prised
we mustn't have prised
you mustn't have prised
they mustn't have prised	I mustn't have been prising
you mustn't have been prising
he mustn't have been prising
we mustn't have been prising
you mustn't have been prising
they mustn't have been prising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I prise?
must you prise?
must he prise?
must we prise?
must you prise?
must they prise? 	must I be prising?
must you be prising?
must he be prising?
must we be prising?
must you be prising?
must they be prising? 	must I have prised?
must you have prised?
must he have prised?
must we have prised?
must you have prised?
must they have prised? 	must I have been prising?
must you have been prising?
must he have been prising?
must we have been prising?
must you have been prising?
must they have been prising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I prise?
mustn't you prise?
mustn't he prise?
mustn't we prise?
mustn't you prise?
mustn't they prise? 	mustn't I be prising?
mustn't you be prising?
mustn't he be prising?
mustn't we be prising?
mustn't you be prising?
mustn't they be prising? 	mustn't I have prised?
mustn't you have prised?
mustn't he have prised?
mustn't we have prised?
mustn't you have prised?
mustn't they have prised? 	mustn't I have been prising?
mustn't you have been prising?
mustn't he have been prising?
mustn't we have been prising?
mustn't you have been prising?
mustn't they have been prising?