must defoliate
Regular verb: defoliate - defoliated- defoliated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must defoliate
you must defoliate
he must defoliate
we must defoliate
you must defoliate
they must defoliate 	I must be defoliating
you must be defoliating
he must be defoliating
we must be defoliating
you must be defoliating
they must be defoliating	I must have defoliated
you must have defoliated
he must have defoliated
we must have defoliated
you must have defoliated
they must have defoliated	I must have been defoliating
you must have been defoliating
he must have been defoliating
we must have been defoliating
you must have been defoliating
they must have been defoliating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not defoliate
you must not defoliate
he must not defoliate
we must not defoliate
you must not defoliate
they must not defoliate 	I must not be defoliating
you must not be defoliating
he must not be defoliating
we must not be defoliating
you must not be defoliating
they must not be defoliating	I must not have defoliated
you must not have defoliated
he must not have defoliated
we must not have defoliated
you must not have defoliated
they must not have defoliated	I must not have been defoliating
you must not have been defoliating
he must not have been defoliating
we must not have been defoliating
you must not have been defoliating
they must not have been defoliating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I defoliate?
must you defoliate?
must he defoliate?
must we defoliate?
must you defoliate?
must they defoliate? 	must I be defoliating?
must you be defoliating?
must he be defoliating?
must we be defoliating?
must you be defoliating?
must they be defoliating? 	must I have defoliated?
must you have defoliated?
must he have defoliated?
must we have defoliated?
must you have defoliated?
must they have defoliated? 	must I have been defoliating?
must you have been defoliating?
must he have been defoliating?
must we have been defoliating?
must you have been defoliating?
must they have been defoliating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not defoliate?
must you not defoliate?
must he not defoliate?
must we not defoliate?
must you not defoliate?
must they not defoliate? 	must I not be defoliating?
must you not be defoliating?
must he not be defoliating?
must we not be defoliating?
must you not be defoliating?
must they not be defoliating? 	must I not have defoliated?
must you not have defoliated?
must he not have defoliated?
must we not have defoliated?
must you not have defoliated?
must they not have defoliated? 	must I not have been defoliating?
must you not have been defoliating?
must he not have been defoliating?
must we not have been defoliating?
must you not have been defoliating?
must they not have been defoliating?