English verb conjugation
MUST SWELL

Irregular verb: swell - swelled - swelled, swollen

Affirmation

Simple form	V-ing form
I must swell you must swell she must swell we must swell you must swell they must swell	I must be swelling you must be swelling she must be swelling we must be swelling you must be swelling they must be swelling
Perfect	V-ing perfect
I must have swelled, swollen you must have swelled, swollen she must have swelled, swollen we must have swelled, swollen you must have swelled, swollen they must have swelled, swollen	I must have been swelling you must have been swelling she must have been swelling we must have been swelling you must have been swelling they must have been swelling

Negation

Simple form	V-ing form
I mustn't swell you mustn't swell she mustn't swell we mustn't swell you mustn't swell they mustn't swell	I mustn't be swelling you mustn't be swelling she mustn't be swelling we mustn't be swelling you mustn't be swelling they mustn't be swelling
Perfect	V-ing perfect
I mustn't have swelled, swollen you mustn't have swelled, swollen she mustn't have swelled, swollen we mustn't have swelled, swollen you mustn't have swelled, swollen they mustn't have swelled, swollen	I mustn't have been swelling you mustn't have been swelling she mustn't have been swelling we mustn't have been swelling you mustn't have been swelling they mustn't have been swelling

Interrogative form

Simple form	V-ing form
must I swell? must you swell? must she swell? must we swell? must you swell? must they swell?	must I be swelling? must you be swelling? must she be swelling? must we be swelling? must you be swelling? must they be swelling?
Perfect	V-ing perfect
must I have swelled, swollen? must you have swelled, swollen? must she have swelled, swollen? must we have swelled, swollen? must you have swelled, swollen? must they have swelled, swollen?	must I have been swelling? must you have been swelling? must she have been swelling? must we have been swelling? must you have been swelling? must they have been swelling?

Interro-negative form

Simple form	V-ing form
mustn't I swell? mustn't you swell? mustn't she swell? mustn't we swell? mustn't you swell? mustn't they swell?	mustn't I be swelling? mustn't you be swelling? mustn't she be swelling? mustn't we be swelling? mustn't you be swelling? mustn't they be swelling?
Perfect	V-ing perfect
mustn't I have swelled, swollen? mustn't you have swelled, swollen? mustn't she have swelled, swollen? mustn't we have swelled, swollen? mustn't you have swelled, swollen? mustn't they have swelled, swollen?	mustn't I have been swelling? mustn't you have been swelling? mustn't she have been swelling? mustn't we have been swelling? mustn't you have been swelling? mustn't they have been swelling?