must fumigate
Regular verb: fumigate - fumigated- fumigated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must fumigate
you must fumigate
she must fumigate
we must fumigate
you must fumigate
they must fumigate 	I must be fumigating
you must be fumigating
she must be fumigating
we must be fumigating
you must be fumigating
they must be fumigating	I must have fumigated
you must have fumigated
she must have fumigated
we must have fumigated
you must have fumigated
they must have fumigated	I must have been fumigating
you must have been fumigating
she must have been fumigating
we must have been fumigating
you must have been fumigating
they must have been fumigating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not fumigate
you must not fumigate
she must not fumigate
we must not fumigate
you must not fumigate
they must not fumigate 	I must not be fumigating
you must not be fumigating
she must not be fumigating
we must not be fumigating
you must not be fumigating
they must not be fumigating	I must not have fumigated
you must not have fumigated
she must not have fumigated
we must not have fumigated
you must not have fumigated
they must not have fumigated	I must not have been fumigating
you must not have been fumigating
she must not have been fumigating
we must not have been fumigating
you must not have been fumigating
they must not have been fumigating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I fumigate?
must you fumigate?
must she fumigate?
must we fumigate?
must you fumigate?
must they fumigate? 	must I be fumigating?
must you be fumigating?
must she be fumigating?
must we be fumigating?
must you be fumigating?
must they be fumigating? 	must I have fumigated?
must you have fumigated?
must she have fumigated?
must we have fumigated?
must you have fumigated?
must they have fumigated? 	must I have been fumigating?
must you have been fumigating?
must she have been fumigating?
must we have been fumigating?
must you have been fumigating?
must they have been fumigating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not fumigate?
must you not fumigate?
must she not fumigate?
must we not fumigate?
must you not fumigate?
must they not fumigate? 	must I not be fumigating?
must you not be fumigating?
must she not be fumigating?
must we not be fumigating?
must you not be fumigating?
must they not be fumigating? 	must I not have fumigated?
must you not have fumigated?
must she not have fumigated?
must we not have fumigated?
must you not have fumigated?
must they not have fumigated? 	must I not have been fumigating?
must you not have been fumigating?
must she not have been fumigating?
must we not have been fumigating?
must you not have been fumigating?
must they not have been fumigating?