must accredit
Verbo regular: accredit - accredited- accredited

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must accredit
you must accredit
she must accredit
we must accredit
you must accredit
they must accredit 	I must be accrediting
you must be accrediting
she must be accrediting
we must be accrediting
you must be accrediting
they must be accrediting	I must have accredited
you must have accredited
she must have accredited
we must have accredited
you must have accredited
they must have accredited	I must have been accrediting
you must have been accrediting
she must have been accrediting
we must have been accrediting
you must have been accrediting
they must have been accrediting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't accredit
you mustn't accredit
she mustn't accredit
we mustn't accredit
you mustn't accredit
they mustn't accredit 	I mustn't be accrediting
you mustn't be accrediting
she mustn't be accrediting
we mustn't be accrediting
you mustn't be accrediting
they mustn't be accrediting	I mustn't have accredited
you mustn't have accredited
she mustn't have accredited
we mustn't have accredited
you mustn't have accredited
they mustn't have accredited	I mustn't have been accrediting
you mustn't have been accrediting
she mustn't have been accrediting
we mustn't have been accrediting
you mustn't have been accrediting
they mustn't have been accrediting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I accredit?
must you accredit?
must she accredit?
must we accredit?
must you accredit?
must they accredit? 	must I be accrediting?
must you be accrediting?
must she be accrediting?
must we be accrediting?
must you be accrediting?
must they be accrediting? 	must I have accredited?
must you have accredited?
must she have accredited?
must we have accredited?
must you have accredited?
must they have accredited? 	must I have been accrediting?
must you have been accrediting?
must she have been accrediting?
must we have been accrediting?
must you have been accrediting?
must they have been accrediting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I accredit?
mustn't you accredit?
mustn't she accredit?
mustn't we accredit?
mustn't you accredit?
mustn't they accredit? 	mustn't I be accrediting?
mustn't you be accrediting?
mustn't she be accrediting?
mustn't we be accrediting?
mustn't you be accrediting?
mustn't they be accrediting? 	mustn't I have accredited?
mustn't you have accredited?
mustn't she have accredited?
mustn't we have accredited?
mustn't you have accredited?
mustn't they have accredited? 	mustn't I have been accrediting?
mustn't you have been accrediting?
mustn't she have been accrediting?
mustn't we have been accrediting?
mustn't you have been accrediting?
mustn't they have been accrediting?