English verb conjugation
MUST BARTER

Regular verb: barter - bartered - bartered

Affirmation

Simple form	V-ing form
I must barter you must barter she must barter we must barter you must barter they must barter	I must be bartering you must be bartering she must be bartering we must be bartering you must be bartering they must be bartering
Perfect	V-ing perfect
I must have bartered you must have bartered she must have bartered we must have bartered you must have bartered they must have bartered	I must have been bartering you must have been bartering she must have been bartering we must have been bartering you must have been bartering they must have been bartering

Negation

Simple form	V-ing form
I mustn't barter you mustn't barter she mustn't barter we mustn't barter you mustn't barter they mustn't barter	I mustn't be bartering you mustn't be bartering she mustn't be bartering we mustn't be bartering you mustn't be bartering they mustn't be bartering
Perfect	V-ing perfect
I mustn't have bartered you mustn't have bartered she mustn't have bartered we mustn't have bartered you mustn't have bartered they mustn't have bartered	I mustn't have been bartering you mustn't have been bartering she mustn't have been bartering we mustn't have been bartering you mustn't have been bartering they mustn't have been bartering

Interrogative form

Simple form	V-ing form
must I barter? must you barter? must she barter? must we barter? must you barter? must they barter?	must I be bartering? must you be bartering? must she be bartering? must we be bartering? must you be bartering? must they be bartering?
Perfect	V-ing perfect
must I have bartered? must you have bartered? must she have bartered? must we have bartered? must you have bartered? must they have bartered?	must I have been bartering? must you have been bartering? must she have been bartering? must we have been bartering? must you have been bartering? must they have been bartering?

Interro-negative form

Simple form	V-ing form
mustn't I barter? mustn't you barter? mustn't she barter? mustn't we barter? mustn't you barter? mustn't they barter?	mustn't I be bartering? mustn't you be bartering? mustn't she be bartering? mustn't we be bartering? mustn't you be bartering? mustn't they be bartering?
Perfect	V-ing perfect
mustn't I have bartered? mustn't you have bartered? mustn't she have bartered? mustn't we have bartered? mustn't you have bartered? mustn't they have bartered?	mustn't I have been bartering? mustn't you have been bartering? mustn't she have been bartering? mustn't we have been bartering? mustn't you have been bartering? mustn't they have been bartering?