must credit
Regular verb: credit - credited- credited

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must credit
you must credit
she must credit
we must credit
you must credit
they must credit 	I must be crediting
you must be crediting
she must be crediting
we must be crediting
you must be crediting
they must be crediting	I must have credited
you must have credited
she must have credited
we must have credited
you must have credited
they must have credited	I must have been crediting
you must have been crediting
she must have been crediting
we must have been crediting
you must have been crediting
they must have been crediting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not credit
you must not credit
she must not credit
we must not credit
you must not credit
they must not credit 	I must not be crediting
you must not be crediting
she must not be crediting
we must not be crediting
you must not be crediting
they must not be crediting	I must not have credited
you must not have credited
she must not have credited
we must not have credited
you must not have credited
they must not have credited	I must not have been crediting
you must not have been crediting
she must not have been crediting
we must not have been crediting
you must not have been crediting
they must not have been crediting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I credit?
must you credit?
must she credit?
must we credit?
must you credit?
must they credit? 	must I be crediting?
must you be crediting?
must she be crediting?
must we be crediting?
must you be crediting?
must they be crediting? 	must I have credited?
must you have credited?
must she have credited?
must we have credited?
must you have credited?
must they have credited? 	must I have been crediting?
must you have been crediting?
must she have been crediting?
must we have been crediting?
must you have been crediting?
must they have been crediting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not credit?
must you not credit?
must she not credit?
must we not credit?
must you not credit?
must they not credit? 	must I not be crediting?
must you not be crediting?
must she not be crediting?
must we not be crediting?
must you not be crediting?
must they not be crediting? 	must I not have credited?
must you not have credited?
must she not have credited?
must we not have credited?
must you not have credited?
must they not have credited? 	must I not have been crediting?
must you not have been crediting?
must she not have been crediting?
must we not have been crediting?
must you not have been crediting?
must they not have been crediting?