must preformat
Regular verb: preformat - preformated- preformated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must preformat
you must preformat
she must preformat
we must preformat
you must preformat
they must preformat 	I must be preformating
you must be preformating
she must be preformating
we must be preformating
you must be preformating
they must be preformating	I must have preformated
you must have preformated
she must have preformated
we must have preformated
you must have preformated
they must have preformated	I must have been preformating
you must have been preformating
she must have been preformating
we must have been preformating
you must have been preformating
they must have been preformating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't preformat
you mustn't preformat
she mustn't preformat
we mustn't preformat
you mustn't preformat
they mustn't preformat 	I mustn't be preformating
you mustn't be preformating
she mustn't be preformating
we mustn't be preformating
you mustn't be preformating
they mustn't be preformating	I mustn't have preformated
you mustn't have preformated
she mustn't have preformated
we mustn't have preformated
you mustn't have preformated
they mustn't have preformated	I mustn't have been preformating
you mustn't have been preformating
she mustn't have been preformating
we mustn't have been preformating
you mustn't have been preformating
they mustn't have been preformating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I preformat?
must you preformat?
must she preformat?
must we preformat?
must you preformat?
must they preformat? 	must I be preformating?
must you be preformating?
must she be preformating?
must we be preformating?
must you be preformating?
must they be preformating? 	must I have preformated?
must you have preformated?
must she have preformated?
must we have preformated?
must you have preformated?
must they have preformated? 	must I have been preformating?
must you have been preformating?
must she have been preformating?
must we have been preformating?
must you have been preformating?
must they have been preformating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I preformat?
mustn't you preformat?
mustn't she preformat?
mustn't we preformat?
mustn't you preformat?
mustn't they preformat? 	mustn't I be preformating?
mustn't you be preformating?
mustn't she be preformating?
mustn't we be preformating?
mustn't you be preformating?
mustn't they be preformating? 	mustn't I have preformated?
mustn't you have preformated?
mustn't she have preformated?
mustn't we have preformated?
mustn't you have preformated?
mustn't they have preformated? 	mustn't I have been preformating?
mustn't you have been preformating?
mustn't she have been preformating?
mustn't we have been preformating?
mustn't you have been preformating?
mustn't they have been preformating?