must permeate
Regular verb: permeate - permeated- permeated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must permeate
you must permeate
she must permeate
we must permeate
you must permeate
they must permeate 	I must be permeating
you must be permeating
she must be permeating
we must be permeating
you must be permeating
they must be permeating	I must have permeated
you must have permeated
she must have permeated
we must have permeated
you must have permeated
they must have permeated	I must have been permeating
you must have been permeating
she must have been permeating
we must have been permeating
you must have been permeating
they must have been permeating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't permeate
you mustn't permeate
she mustn't permeate
we mustn't permeate
you mustn't permeate
they mustn't permeate 	I mustn't be permeating
you mustn't be permeating
she mustn't be permeating
we mustn't be permeating
you mustn't be permeating
they mustn't be permeating	I mustn't have permeated
you mustn't have permeated
she mustn't have permeated
we mustn't have permeated
you mustn't have permeated
they mustn't have permeated	I mustn't have been permeating
you mustn't have been permeating
she mustn't have been permeating
we mustn't have been permeating
you mustn't have been permeating
they mustn't have been permeating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I permeate?
must you permeate?
must she permeate?
must we permeate?
must you permeate?
must they permeate? 	must I be permeating?
must you be permeating?
must she be permeating?
must we be permeating?
must you be permeating?
must they be permeating? 	must I have permeated?
must you have permeated?
must she have permeated?
must we have permeated?
must you have permeated?
must they have permeated? 	must I have been permeating?
must you have been permeating?
must she have been permeating?
must we have been permeating?
must you have been permeating?
must they have been permeating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I permeate?
mustn't you permeate?
mustn't she permeate?
mustn't we permeate?
mustn't you permeate?
mustn't they permeate? 	mustn't I be permeating?
mustn't you be permeating?
mustn't she be permeating?
mustn't we be permeating?
mustn't you be permeating?
mustn't they be permeating? 	mustn't I have permeated?
mustn't you have permeated?
mustn't she have permeated?
mustn't we have permeated?
mustn't you have permeated?
mustn't they have permeated? 	mustn't I have been permeating?
mustn't you have been permeating?
mustn't she have been permeating?
mustn't we have been permeating?
mustn't you have been permeating?
mustn't they have been permeating?