English verb conjugation
MUST LARK

Regular verb: lark - larked - larked

Affirmation

Simple form	V-ing form
I must lark you must lark she must lark we must lark you must lark they must lark	I must be larking you must be larking she must be larking we must be larking you must be larking they must be larking
Perfect	V-ing perfect
I must have larked you must have larked she must have larked we must have larked you must have larked they must have larked	I must have been larking you must have been larking she must have been larking we must have been larking you must have been larking they must have been larking

Negation

Simple form	V-ing form
I must not lark you must not lark she must not lark we must not lark you must not lark they must not lark	I must not be larking you must not be larking she must not be larking we must not be larking you must not be larking they must not be larking
Perfect	V-ing perfect
I must not have larked you must not have larked she must not have larked we must not have larked you must not have larked they must not have larked	I must not have been larking you must not have been larking she must not have been larking we must not have been larking you must not have been larking they must not have been larking

Interrogative form

Simple form	V-ing form
must I lark? must you lark? must she lark? must we lark? must you lark? must they lark?	must I be larking? must you be larking? must she be larking? must we be larking? must you be larking? must they be larking?
Perfect	V-ing perfect
must I have larked? must you have larked? must she have larked? must we have larked? must you have larked? must they have larked?	must I have been larking? must you have been larking? must she have been larking? must we have been larking? must you have been larking? must they have been larking?

Interro-negative form

Simple form	V-ing form
must I not lark? must you not lark? must she not lark? must we not lark? must you not lark? must they not lark?	must I not be larking? must you not be larking? must she not be larking? must we not be larking? must you not be larking? must they not be larking?
Perfect	V-ing perfect
must I not have larked? must you not have larked? must she not have larked? must we not have larked? must you not have larked? must they not have larked?	must I not have been larking? must you not have been larking? must she not have been larking? must we not have been larking? must you not have been larking? must they not have been larking?