must attaint
Verbo regular: attaint - attainted- attainted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must attaint
you must attaint
he must attaint
we must attaint
you must attaint
they must attaint 	I must be attainting
you must be attainting
he must be attainting
we must be attainting
you must be attainting
they must be attainting	I must have attainted
you must have attainted
he 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
he must have been attainting
we must have been attainting
you must have been attainting
they must have been attainting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not attaint
you must not attaint
he must not attaint
we must not attaint
you must not attaint
they must not attaint 	I must not be attainting
you must not be attainting
he must not be attainting
we must not be attainting
you must not be attainting
they must not be attainting	I must not have attainted
you must not have attainted
he must not have attainted
we must not have attainted
you must not have attainted
they must not have attainted	I must not have been attainting
you must not have been attainting
he must not have been attainting
we must not have been attainting
you must not have been attainting
they must not have been attainting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I attaint?
must you attaint?
must he attaint?
must we attaint?
must you attaint?
must they attaint? 	must I be attainting?
must you be attainting?
must he be attainting?
must we be attainting?
must you be attainting?
must they be attainting? 	must I have attainted?
must you have attainted?
must he 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 he have been attainting?
must we have been attainting?
must you have been attainting?
must they have been attainting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not attaint?
must you not attaint?
must he not attaint?
must we not attaint?
must you not attaint?
must they not attaint? 	must I not be attainting?
must you not be attainting?
must he not be attainting?
must we not be attainting?
must you not be attainting?
must they not be attainting? 	must I not have attainted?
must you not have attainted?
must he not have attainted?
must we not have attainted?
must you not have attainted?
must they not have attainted? 	must I not have been attainting?
must you not have been attainting?
must he not have been attainting?
must we not have been attainting?
must you not have been attainting?
must they not have been attainting?