English verb conjugation
MUST CREDIT

Regular verb: credit - credited - credited

Affirmation

Simple form	V-ing form
I must credit you must credit he must credit we must credit you must credit they must credit	I must be crediting you must be crediting he must be crediting we must be crediting you must be crediting they must be crediting
Perfect	V-ing perfect
I must have credited you must have credited he 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 he 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
I mustn't credit you mustn't credit he mustn't credit we mustn't credit you mustn't credit they mustn't credit	I mustn't be crediting you mustn't be crediting he mustn't be crediting we mustn't be crediting you mustn't be crediting they mustn't be crediting
Perfect	V-ing perfect
I mustn't have credited you mustn't have credited he mustn't have credited we mustn't have credited you mustn't have credited they mustn't have credited	I mustn't have been crediting you mustn't have been crediting he mustn't have been crediting we mustn't have been crediting you mustn't have been crediting they mustn't have been crediting

Interrogative form

Simple form	V-ing form
must I credit? must you credit? must he credit? must we credit? must you credit? must they credit?	must I be crediting? must you be crediting? must he be crediting? must we be crediting? must you be crediting? must they be crediting?
Perfect	V-ing perfect
must I have credited? must you have credited? must he 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 he 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
mustn't I credit? mustn't you credit? mustn't he credit? mustn't we credit? mustn't you credit? mustn't they credit?	mustn't I be crediting? mustn't you be crediting? mustn't he be crediting? mustn't we be crediting? mustn't you be crediting? mustn't they be crediting?
Perfect	V-ing perfect
mustn't I have credited? mustn't you have credited? mustn't he have credited? mustn't we have credited? mustn't you have credited? mustn't they have credited?	mustn't I have been crediting? mustn't you have been crediting? mustn't he have been crediting? mustn't we have been crediting? mustn't you have been crediting? mustn't they have been crediting?