must attaint
Regular verb: attaint - attainted- attainted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must attaint
you must attaint
she must attaint
we must attaint
you must attaint
they must attaint 	I must be attainting
you must be attainting
she must be attainting
we must be attainting
you must be attainting
they must be attainting	I must have attainted
you must have attainted
she must have attainted
we must have attainted
you must have attainted
they must have attainted	I must have been attainting
you must have been attainting
she must have been attainting
we must have been attainting
you must have been attainting
they must have been attainting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't attaint
you mustn't attaint
she mustn't attaint
we mustn't attaint
you mustn't attaint
they mustn't attaint 	I mustn't be attainting
you mustn't be attainting
she mustn't be attainting
we mustn't be attainting
you mustn't be attainting
they mustn't be attainting	I mustn't have attainted
you mustn't have attainted
she mustn't have attainted
we mustn't have attainted
you mustn't have attainted
they mustn't have attainted	I mustn't have been attainting
you mustn't have been attainting
she mustn't have been attainting
we mustn't have been attainting
you mustn't have been attainting
they mustn't have been attainting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I attaint?
must you attaint?
must she attaint?
must we attaint?
must you attaint?
must they attaint? 	must I be attainting?
must you be attainting?
must she be attainting?
must we be attainting?
must you be attainting?
must they be attainting? 	must I have attainted?
must you have attainted?
must she have attainted?
must we have attainted?
must you have attainted?
must they have attainted? 	must I have been attainting?
must you have been attainting?
must she have been attainting?
must we have been attainting?
must you have been attainting?
must they have been attainting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I attaint?
mustn't you attaint?
mustn't she attaint?
mustn't we attaint?
mustn't you attaint?
mustn't they attaint? 	mustn't I be attainting?
mustn't you be attainting?
mustn't she be attainting?
mustn't we be attainting?
mustn't you be attainting?
mustn't they be attainting? 	mustn't I have attainted?
mustn't you have attainted?
mustn't she have attainted?
mustn't we have attainted?
mustn't you have attainted?
mustn't they have attainted? 	mustn't I have been attainting?
mustn't you have been attainting?
mustn't she have been attainting?
mustn't we have been attainting?
mustn't you have been attainting?
mustn't they have been attainting?