English verb conjugation
MUST FERMENT

Regular verb: ferment - fermented - fermented

Affirmation

Simple form	V-ing form
I must ferment you must ferment she must ferment we must ferment you must ferment they must ferment	I must be fermenting you must be fermenting she must be fermenting we must be fermenting you must be fermenting they must be fermenting
Perfect	V-ing perfect
I must have fermented you must have fermented she must have fermented we must have fermented you must have fermented they must have fermented	I must have been fermenting you must have been fermenting she must have been fermenting we must have been fermenting you must have been fermenting they must have been fermenting

Negation

Simple form	V-ing form
I mustn't ferment you mustn't ferment she mustn't ferment we mustn't ferment you mustn't ferment they mustn't ferment	I mustn't be fermenting you mustn't be fermenting she mustn't be fermenting we mustn't be fermenting you mustn't be fermenting they mustn't be fermenting
Perfect	V-ing perfect
I mustn't have fermented you mustn't have fermented she mustn't have fermented we mustn't have fermented you mustn't have fermented they mustn't have fermented	I mustn't have been fermenting you mustn't have been fermenting she mustn't have been fermenting we mustn't have been fermenting you mustn't have been fermenting they mustn't have been fermenting

Interrogative form

Simple form	V-ing form
must I ferment? must you ferment? must she ferment? must we ferment? must you ferment? must they ferment?	must I be fermenting? must you be fermenting? must she be fermenting? must we be fermenting? must you be fermenting? must they be fermenting?
Perfect	V-ing perfect
must I have fermented? must you have fermented? must she have fermented? must we have fermented? must you have fermented? must they have fermented?	must I have been fermenting? must you have been fermenting? must she have been fermenting? must we have been fermenting? must you have been fermenting? must they have been fermenting?

Interro-negative form

Simple form	V-ing form
mustn't I ferment? mustn't you ferment? mustn't she ferment? mustn't we ferment? mustn't you ferment? mustn't they ferment?	mustn't I be fermenting? mustn't you be fermenting? mustn't she be fermenting? mustn't we be fermenting? mustn't you be fermenting? mustn't they be fermenting?
Perfect	V-ing perfect
mustn't I have fermented? mustn't you have fermented? mustn't she have fermented? mustn't we have fermented? mustn't you have fermented? mustn't they have fermented?	mustn't I have been fermenting? mustn't you have been fermenting? mustn't she have been fermenting? mustn't we have been fermenting? mustn't you have been fermenting? mustn't they have been fermenting?