English verb conjugation
MUST FRESHEN

Regular verb: freshen - freshened - freshened

Affirmation

Simple form	V-ing form
I must freshen you must freshen she must freshen we must freshen you must freshen they must freshen	I must be freshening you must be freshening she must be freshening we must be freshening you must be freshening they must be freshening
Perfect	V-ing perfect
I must have freshened you must have freshened she must have freshened we must have freshened you must have freshened they must have freshened	I must have been freshening you must have been freshening she must have been freshening we must have been freshening you must have been freshening they must have been freshening

Negation

Simple form	V-ing form
I must not freshen you must not freshen she must not freshen we must not freshen you must not freshen they must not freshen	I must not be freshening you must not be freshening she must not be freshening we must not be freshening you must not be freshening they must not be freshening
Perfect	V-ing perfect
I must not have freshened you must not have freshened she must not have freshened we must not have freshened you must not have freshened they must not have freshened	I must not have been freshening you must not have been freshening she must not have been freshening we must not have been freshening you must not have been freshening they must not have been freshening

Interrogative form

Simple form	V-ing form
must I freshen? must you freshen? must she freshen? must we freshen? must you freshen? must they freshen?	must I be freshening? must you be freshening? must she be freshening? must we be freshening? must you be freshening? must they be freshening?
Perfect	V-ing perfect
must I have freshened? must you have freshened? must she have freshened? must we have freshened? must you have freshened? must they have freshened?	must I have been freshening? must you have been freshening? must she have been freshening? must we have been freshening? must you have been freshening? must they have been freshening?

Interro-negative form

Simple form	V-ing form
must I not freshen? must you not freshen? must she not freshen? must we not freshen? must you not freshen? must they not freshen?	must I not be freshening? must you not be freshening? must she not be freshening? must we not be freshening? must you not be freshening? must they not be freshening?
Perfect	V-ing perfect
must I not have freshened? must you not have freshened? must she not have freshened? must we not have freshened? must you not have freshened? must they not have freshened?	must I not have been freshening? must you not have been freshening? must she not have been freshening? must we not have been freshening? must you not have been freshening? must they not have been freshening?