English verb conjugation
MUST REFILTER

Regular verb: refilter - refiltered - refiltered

Affirmation

Simple form	V-ing form
I must refilter you must refilter she must refilter we must refilter you must refilter they must refilter	I must be refiltering you must be refiltering she must be refiltering we must be refiltering you must be refiltering they must be refiltering
Perfect	V-ing perfect
I must have refiltered you must have refiltered she must have refiltered we must have refiltered you must have refiltered they must have refiltered	I must have been refiltering you must have been refiltering she must have been refiltering we must have been refiltering you must have been refiltering they must have been refiltering

Negation

Simple form	V-ing form
I mustn't refilter you mustn't refilter she mustn't refilter we mustn't refilter you mustn't refilter they mustn't refilter	I mustn't be refiltering you mustn't be refiltering she mustn't be refiltering we mustn't be refiltering you mustn't be refiltering they mustn't be refiltering
Perfect	V-ing perfect
I mustn't have refiltered you mustn't have refiltered she mustn't have refiltered we mustn't have refiltered you mustn't have refiltered they mustn't have refiltered	I mustn't have been refiltering you mustn't have been refiltering she mustn't have been refiltering we mustn't have been refiltering you mustn't have been refiltering they mustn't have been refiltering

Interrogative form

Simple form	V-ing form
must I refilter? must you refilter? must she refilter? must we refilter? must you refilter? must they refilter?	must I be refiltering? must you be refiltering? must she be refiltering? must we be refiltering? must you be refiltering? must they be refiltering?
Perfect	V-ing perfect
must I have refiltered? must you have refiltered? must she have refiltered? must we have refiltered? must you have refiltered? must they have refiltered?	must I have been refiltering? must you have been refiltering? must she have been refiltering? must we have been refiltering? must you have been refiltering? must they have been refiltering?

Interro-negative form

Simple form	V-ing form
mustn't I refilter? mustn't you refilter? mustn't she refilter? mustn't we refilter? mustn't you refilter? mustn't they refilter?	mustn't I be refiltering? mustn't you be refiltering? mustn't she be refiltering? mustn't we be refiltering? mustn't you be refiltering? mustn't they be refiltering?
Perfect	V-ing perfect
mustn't I have refiltered? mustn't you have refiltered? mustn't she have refiltered? mustn't we have refiltered? mustn't you have refiltered? mustn't they have refiltered?	mustn't I have been refiltering? mustn't you have been refiltering? mustn't she have been refiltering? mustn't we have been refiltering? mustn't you have been refiltering? mustn't they have been refiltering?