English verb conjugation
MUST SPONGE

Regular verb: sponge - sponged - sponged

Affirmation

Simple form	V-ing form
I must sponge you must sponge she must sponge we must sponge you must sponge they must sponge	I must be sponging you must be sponging she must be sponging we must be sponging you must be sponging they must be sponging
Perfect	V-ing perfect
I must have sponged you must have sponged she must have sponged we must have sponged you must have sponged they must have sponged	I must have been sponging you must have been sponging she must have been sponging we must have been sponging you must have been sponging they must have been sponging

Negation

Simple form	V-ing form
I mustn't sponge you mustn't sponge she mustn't sponge we mustn't sponge you mustn't sponge they mustn't sponge	I mustn't be sponging you mustn't be sponging she mustn't be sponging we mustn't be sponging you mustn't be sponging they mustn't be sponging
Perfect	V-ing perfect
I mustn't have sponged you mustn't have sponged she mustn't have sponged we mustn't have sponged you mustn't have sponged they mustn't have sponged	I mustn't have been sponging you mustn't have been sponging she mustn't have been sponging we mustn't have been sponging you mustn't have been sponging they mustn't have been sponging

Interrogative form

Simple form	V-ing form
must I sponge? must you sponge? must she sponge? must we sponge? must you sponge? must they sponge?	must I be sponging? must you be sponging? must she be sponging? must we be sponging? must you be sponging? must they be sponging?
Perfect	V-ing perfect
must I have sponged? must you have sponged? must she have sponged? must we have sponged? must you have sponged? must they have sponged?	must I have been sponging? must you have been sponging? must she have been sponging? must we have been sponging? must you have been sponging? must they have been sponging?

Interro-negative form

Simple form	V-ing form
mustn't I sponge? mustn't you sponge? mustn't she sponge? mustn't we sponge? mustn't you sponge? mustn't they sponge?	mustn't I be sponging? mustn't you be sponging? mustn't she be sponging? mustn't we be sponging? mustn't you be sponging? mustn't they be sponging?
Perfect	V-ing perfect
mustn't I have sponged? mustn't you have sponged? mustn't she have sponged? mustn't we have sponged? mustn't you have sponged? mustn't they have sponged?	mustn't I have been sponging? mustn't you have been sponging? mustn't she have been sponging? mustn't we have been sponging? mustn't you have been sponging? mustn't they have been sponging?