must postfix
Verbo regular: postfix - postfixed- postfixed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must postfix
you must postfix
she must postfix
we must postfix
you must postfix
they must postfix 	I must be postfixing
you must be postfixing
she must be postfixing
we must be postfixing
you must be postfixing
they must be postfixing	I must have postfixed
you must have postfixed
she must have postfixed
we must have postfixed
you must have postfixed
they must have postfixed	I must have been postfixing
you must have been postfixing
she must have been postfixing
we must have been postfixing
you must have been postfixing
they must have been postfixing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not postfix
you must not postfix
she must not postfix
we must not postfix
you must not postfix
they must not postfix 	I must not be postfixing
you must not be postfixing
she must not be postfixing
we must not be postfixing
you must not be postfixing
they must not be postfixing	I must not have postfixed
you must not have postfixed
she must not have postfixed
we must not have postfixed
you must not have postfixed
they must not have postfixed	I must not have been postfixing
you must not have been postfixing
she must not have been postfixing
we must not have been postfixing
you must not have been postfixing
they must not have been postfixing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I postfix?
must you postfix?
must she postfix?
must we postfix?
must you postfix?
must they postfix? 	must I be postfixing?
must you be postfixing?
must she be postfixing?
must we be postfixing?
must you be postfixing?
must they be postfixing? 	must I have postfixed?
must you have postfixed?
must she have postfixed?
must we have postfixed?
must you have postfixed?
must they have postfixed? 	must I have been postfixing?
must you have been postfixing?
must she have been postfixing?
must we have been postfixing?
must you have been postfixing?
must they have been postfixing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not postfix?
must you not postfix?
must she not postfix?
must we not postfix?
must you not postfix?
must they not postfix? 	must I not be postfixing?
must you not be postfixing?
must she not be postfixing?
must we not be postfixing?
must you not be postfixing?
must they not be postfixing? 	must I not have postfixed?
must you not have postfixed?
must she not have postfixed?
must we not have postfixed?
must you not have postfixed?
must they not have postfixed? 	must I not have been postfixing?
must you not have been postfixing?
must she not have been postfixing?
must we not have been postfixing?
must you not have been postfixing?
must they not have been postfixing?