must precast
Regular verb: precast - precasted- precasted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must precast
you must precast
he must precast
we must precast
you must precast
they must precast 	I must be precasting
you must be precasting
he must be precasting
we must be precasting
you must be precasting
they must be precasting	I must have precasted
you must have precasted
he must have precasted
we must have precasted
you must have precasted
they must have precasted	I must have been precasting
you must have been precasting
he must have been precasting
we must have been precasting
you must have been precasting
they must have been precasting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't precast
you mustn't precast
he mustn't precast
we mustn't precast
you mustn't precast
they mustn't precast 	I mustn't be precasting
you mustn't be precasting
he mustn't be precasting
we mustn't be precasting
you mustn't be precasting
they mustn't be precasting	I mustn't have precasted
you mustn't have precasted
he mustn't have precasted
we mustn't have precasted
you mustn't have precasted
they mustn't have precasted	I mustn't have been precasting
you mustn't have been precasting
he mustn't have been precasting
we mustn't have been precasting
you mustn't have been precasting
they mustn't have been precasting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I precast?
must you precast?
must he precast?
must we precast?
must you precast?
must they precast? 	must I be precasting?
must you be precasting?
must he be precasting?
must we be precasting?
must you be precasting?
must they be precasting? 	must I have precasted?
must you have precasted?
must he have precasted?
must we have precasted?
must you have precasted?
must they have precasted? 	must I have been precasting?
must you have been precasting?
must he have been precasting?
must we have been precasting?
must you have been precasting?
must they have been precasting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I precast?
mustn't you precast?
mustn't he precast?
mustn't we precast?
mustn't you precast?
mustn't they precast? 	mustn't I be precasting?
mustn't you be precasting?
mustn't he be precasting?
mustn't we be precasting?
mustn't you be precasting?
mustn't they be precasting? 	mustn't I have precasted?
mustn't you have precasted?
mustn't he have precasted?
mustn't we have precasted?
mustn't you have precasted?
mustn't they have precasted? 	mustn't I have been precasting?
mustn't you have been precasting?
mustn't he have been precasting?
mustn't we have been precasting?
mustn't you have been precasting?
mustn't they have been precasting?