must prawn
Regular verb: prawn - prawned- prawned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must prawn
you must prawn
he must prawn
we must prawn
you must prawn
they must prawn 	I must be prawning
you must be prawning
he must be prawning
we must be prawning
you must be prawning
they must be prawning	I must have prawned
you must have prawned
he must have prawned
we must have prawned
you must have prawned
they must have prawned	I must have been prawning
you must have been prawning
he must have been prawning
we must have been prawning
you must have been prawning
they must have been prawning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't prawn
you mustn't prawn
he mustn't prawn
we mustn't prawn
you mustn't prawn
they mustn't prawn 	I mustn't be prawning
you mustn't be prawning
he mustn't be prawning
we mustn't be prawning
you mustn't be prawning
they mustn't be prawning	I mustn't have prawned
you mustn't have prawned
he mustn't have prawned
we mustn't have prawned
you mustn't have prawned
they mustn't have prawned	I mustn't have been prawning
you mustn't have been prawning
he mustn't have been prawning
we mustn't have been prawning
you mustn't have been prawning
they mustn't have been prawning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I prawn?
must you prawn?
must he prawn?
must we prawn?
must you prawn?
must they prawn? 	must I be prawning?
must you be prawning?
must he be prawning?
must we be prawning?
must you be prawning?
must they be prawning? 	must I have prawned?
must you have prawned?
must he have prawned?
must we have prawned?
must you have prawned?
must they have prawned? 	must I have been prawning?
must you have been prawning?
must he have been prawning?
must we have been prawning?
must you have been prawning?
must they have been prawning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I prawn?
mustn't you prawn?
mustn't he prawn?
mustn't we prawn?
mustn't you prawn?
mustn't they prawn? 	mustn't I be prawning?
mustn't you be prawning?
mustn't he be prawning?
mustn't we be prawning?
mustn't you be prawning?
mustn't they be prawning? 	mustn't I have prawned?
mustn't you have prawned?
mustn't he have prawned?
mustn't we have prawned?
mustn't you have prawned?
mustn't they have prawned? 	mustn't I have been prawning?
mustn't you have been prawning?
mustn't he have been prawning?
mustn't we have been prawning?
mustn't you have been prawning?
mustn't they have been prawning?