English verb conjugation
MUST KERN

Regular verb: kern - kerned - kerned

Affirmation

Simple form	V-ing form
I must kern you must kern she must kern we must kern you must kern they must kern	I must be kerning you must be kerning she must be kerning we must be kerning you must be kerning they must be kerning
Perfect	V-ing perfect
I must have kerned you must have kerned she must have kerned we must have kerned you must have kerned they must have kerned	I must have been kerning you must have been kerning she must have been kerning we must have been kerning you must have been kerning they must have been kerning

Negation

Simple form	V-ing form
I must not kern you must not kern she must not kern we must not kern you must not kern they must not kern	I must not be kerning you must not be kerning she must not be kerning we must not be kerning you must not be kerning they must not be kerning
Perfect	V-ing perfect
I must not have kerned you must not have kerned she must not have kerned we must not have kerned you must not have kerned they must not have kerned	I must not have been kerning you must not have been kerning she must not have been kerning we must not have been kerning you must not have been kerning they must not have been kerning

Interrogative form

Simple form	V-ing form
must I kern? must you kern? must she kern? must we kern? must you kern? must they kern?	must I be kerning? must you be kerning? must she be kerning? must we be kerning? must you be kerning? must they be kerning?
Perfect	V-ing perfect
must I have kerned? must you have kerned? must she have kerned? must we have kerned? must you have kerned? must they have kerned?	must I have been kerning? must you have been kerning? must she have been kerning? must we have been kerning? must you have been kerning? must they have been kerning?

Interro-negative form

Simple form	V-ing form
must I not kern? must you not kern? must she not kern? must we not kern? must you not kern? must they not kern?	must I not be kerning? must you not be kerning? must she not be kerning? must we not be kerning? must you not be kerning? must they not be kerning?
Perfect	V-ing perfect
must I not have kerned? must you not have kerned? must she not have kerned? must we not have kerned? must you not have kerned? must they not have kerned?	must I not have been kerning? must you not have been kerning? must she not have been kerning? must we not have been kerning? must you not have been kerning? must they not have been kerning?