English verb conjugation
MUST COUNT

Regular verb: count - counted - counted

Affirmation

Simple form	V-ing form
I must count you must count she must count we must count you must count they must count	I must be counting you must be counting she must be counting we must be counting you must be counting they must be counting
Perfect	V-ing perfect
I must have counted you must have counted she must have counted we must have counted you must have counted they must have counted	I must have been counting you must have been counting she must have been counting we must have been counting you must have been counting they must have been counting

Negation

Simple form	V-ing form
I must not count you must not count she must not count we must not count you must not count they must not count	I must not be counting you must not be counting she must not be counting we must not be counting you must not be counting they must not be counting
Perfect	V-ing perfect
I must not have counted you must not have counted she must not have counted we must not have counted you must not have counted they must not have counted	I must not have been counting you must not have been counting she must not have been counting we must not have been counting you must not have been counting they must not have been counting

Interrogative form

Simple form	V-ing form
must I count? must you count? must she count? must we count? must you count? must they count?	must I be counting? must you be counting? must she be counting? must we be counting? must you be counting? must they be counting?
Perfect	V-ing perfect
must I have counted? must you have counted? must she have counted? must we have counted? must you have counted? must they have counted?	must I have been counting? must you have been counting? must she have been counting? must we have been counting? must you have been counting? must they have been counting?

Interro-negative form

Simple form	V-ing form
must I not count? must you not count? must she not count? must we not count? must you not count? must they not count?	must I not be counting? must you not be counting? must she not be counting? must we not be counting? must you not be counting? must they not be counting?
Perfect	V-ing perfect
must I not have counted? must you not have counted? must she not have counted? must we not have counted? must you not have counted? must they not have counted?	must I not have been counting? must you not have been counting? must she not have been counting? must we not have been counting? must you not have been counting? must they not have been counting?