must exfoliate
Regular verb: exfoliate - exfoliated- exfoliated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must exfoliate
you must exfoliate
she must exfoliate
we must exfoliate
you must exfoliate
they must exfoliate 	I must be exfoliating
you must be exfoliating
she must be exfoliating
we must be exfoliating
you must be exfoliating
they must be exfoliating	I must have exfoliated
you must have exfoliated
she must have exfoliated
we must have exfoliated
you must have exfoliated
they must have exfoliated	I must have been exfoliating
you must have been exfoliating
she must have been exfoliating
we must have been exfoliating
you must have been exfoliating
they must have been exfoliating	

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

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