I must exfoliate you must exfoliate he must exfoliate we must exfoliate you must exfoliate they must exfoliate
V-ing form
I must be exfoliating you must be exfoliating he must be exfoliating we must be exfoliating you must be exfoliating they must be exfoliating
Perfect
I must have exfoliated you must have exfoliated he must have exfoliated we must have exfoliated you must have exfoliated they must have exfoliated
V-ing perfect
I must have been exfoliating you must have been exfoliating he must have been exfoliating we must have been exfoliating you must have been exfoliating they must have been exfoliating
Negation
Simple form
I must not exfoliate you must not exfoliate he must not exfoliate we must not exfoliate you must not exfoliate they must not exfoliate
V-ing form
I must not be exfoliating you must not be exfoliating he must not be exfoliating we must not be exfoliating you must not be exfoliating they must not be exfoliating
Perfect
I must not have exfoliated you must not have exfoliated he must not have exfoliated we must not have exfoliated you must not have exfoliated they must not have exfoliated
V-ing perfect
I must not have been exfoliating you must not have been exfoliating he must not have been exfoliating we must not have been exfoliating you must not have been exfoliating they must not have been exfoliating
Interrogative form
Simple form
must I exfoliate? must you exfoliate? must he exfoliate? must we exfoliate? must you exfoliate? must they exfoliate?
V-ing form
must I be exfoliating? must you be exfoliating? must he be exfoliating? must we be exfoliating? must you be exfoliating? must they be exfoliating?
Perfect
must I have exfoliated? must you have exfoliated? must he have exfoliated? must we have exfoliated? must you have exfoliated? must they have exfoliated?
V-ing perfect
must I have been exfoliating? must you have been exfoliating? must he have been exfoliating? must we have been exfoliating? must you have been exfoliating? must they have been exfoliating?
Interro-negative form
Simple form
must I not exfoliate? must you not exfoliate? must he not exfoliate? must we not exfoliate? must you not exfoliate? must they not exfoliate?
V-ing form
must I not be exfoliating? must you not be exfoliating? must he not be exfoliating? must we not be exfoliating? must you not be exfoliating? must they not be exfoliating?
Perfect
must I not have exfoliated? must you not have exfoliated? must he not have exfoliated? must we not have exfoliated? must you not have exfoliated? must they not have exfoliated?
V-ing perfect
must I not have been exfoliating? must you not have been exfoliating? must he not have been exfoliating? must we not have been exfoliating? must you not have been exfoliating? must they not have been exfoliating?