must prechoose
Irregular verb: prechoose - prechose- prechosen

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must prechoose
you must prechoose
he must prechoose
we must prechoose
you must prechoose
they must prechoose 	I must be prechoosing
you must be prechoosing
he must be prechoosing
we must be prechoosing
you must be prechoosing
they must be prechoosing	I must have prechosen
you must have prechosen
he must have prechosen
we must have prechosen
you must have prechosen
they must have prechosen	I must have been prechoosing
you must have been prechoosing
he must have been prechoosing
we must have been prechoosing
you must have been prechoosing
they must have been prechoosing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't prechoose
you mustn't prechoose
he mustn't prechoose
we mustn't prechoose
you mustn't prechoose
they mustn't prechoose 	I mustn't be prechoosing
you mustn't be prechoosing
he mustn't be prechoosing
we mustn't be prechoosing
you mustn't be prechoosing
they mustn't be prechoosing	I mustn't have prechosen
you mustn't have prechosen
he mustn't have prechosen
we mustn't have prechosen
you mustn't have prechosen
they mustn't have prechosen	I mustn't have been prechoosing
you mustn't have been prechoosing
he mustn't have been prechoosing
we mustn't have been prechoosing
you mustn't have been prechoosing
they mustn't have been prechoosing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I prechoose?
must you prechoose?
must he prechoose?
must we prechoose?
must you prechoose?
must they prechoose? 	must I be prechoosing?
must you be prechoosing?
must he be prechoosing?
must we be prechoosing?
must you be prechoosing?
must they be prechoosing? 	must I have prechosen?
must you have prechosen?
must he have prechosen?
must we have prechosen?
must you have prechosen?
must they have prechosen? 	must I have been prechoosing?
must you have been prechoosing?
must he have been prechoosing?
must we have been prechoosing?
must you have been prechoosing?
must they have been prechoosing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I prechoose?
mustn't you prechoose?
mustn't he prechoose?
mustn't we prechoose?
mustn't you prechoose?
mustn't they prechoose? 	mustn't I be prechoosing?
mustn't you be prechoosing?
mustn't he be prechoosing?
mustn't we be prechoosing?
mustn't you be prechoosing?
mustn't they be prechoosing? 	mustn't I have prechosen?
mustn't you have prechosen?
mustn't he have prechosen?
mustn't we have prechosen?
mustn't you have prechosen?
mustn't they have prechosen? 	mustn't I have been prechoosing?
mustn't you have been prechoosing?
mustn't he have been prechoosing?
mustn't we have been prechoosing?
mustn't you have been prechoosing?
mustn't they have been prechoosing?