must prebuy
Irregular verb: prebuy - prebought- prebought

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must prebuy
you must prebuy
she must prebuy
we must prebuy
you must prebuy
they must prebuy 	I must be prebuying
you must be prebuying
she must be prebuying
we must be prebuying
you must be prebuying
they must be prebuying	I must have prebought
you must have prebought
she must have prebought
we must have prebought
you must have prebought
they must have prebought	I must have been prebuying
you must have been prebuying
she must have been prebuying
we must have been prebuying
you must have been prebuying
they must have been prebuying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't prebuy
you mustn't prebuy
she mustn't prebuy
we mustn't prebuy
you mustn't prebuy
they mustn't prebuy 	I mustn't be prebuying
you mustn't be prebuying
she mustn't be prebuying
we mustn't be prebuying
you mustn't be prebuying
they mustn't be prebuying	I mustn't have prebought
you mustn't have prebought
she mustn't have prebought
we mustn't have prebought
you mustn't have prebought
they mustn't have prebought	I mustn't have been prebuying
you mustn't have been prebuying
she mustn't have been prebuying
we mustn't have been prebuying
you mustn't have been prebuying
they mustn't have been prebuying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I prebuy?
must you prebuy?
must she prebuy?
must we prebuy?
must you prebuy?
must they prebuy? 	must I be prebuying?
must you be prebuying?
must she be prebuying?
must we be prebuying?
must you be prebuying?
must they be prebuying? 	must I have prebought?
must you have prebought?
must she have prebought?
must we have prebought?
must you have prebought?
must they have prebought? 	must I have been prebuying?
must you have been prebuying?
must she have been prebuying?
must we have been prebuying?
must you have been prebuying?
must they have been prebuying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I prebuy?
mustn't you prebuy?
mustn't she prebuy?
mustn't we prebuy?
mustn't you prebuy?
mustn't they prebuy? 	mustn't I be prebuying?
mustn't you be prebuying?
mustn't she be prebuying?
mustn't we be prebuying?
mustn't you be prebuying?
mustn't they be prebuying? 	mustn't I have prebought?
mustn't you have prebought?
mustn't she have prebought?
mustn't we have prebought?
mustn't you have prebought?
mustn't they have prebought? 	mustn't I have been prebuying?
mustn't you have been prebuying?
mustn't she have been prebuying?
mustn't we have been prebuying?
mustn't you have been prebuying?
mustn't they have been prebuying?