must precast
Regular verb: precast - precasted- precasted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must precast
you must precast
she must precast
we must precast
you must precast
they must precast 	I must be precasting
you must be precasting
she must be precasting
we must be precasting
you must be precasting
they must be precasting	I must have precasted
you must have precasted
she 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
she 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
she 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
she 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
she 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
she 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 she precast?
must we precast?
must you precast?
must they precast? 	must I be precasting?
must you be precasting?
must she be precasting?
must we be precasting?
must you be precasting?
must they be precasting? 	must I have precasted?
must you have precasted?
must she 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 she 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 she 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 she 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 she 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 she have been precasting?
mustn't we have been precasting?
mustn't you have been precasting?
mustn't they have been precasting?