must swell
Irregular verb: swell - swelled- swelled, swollen

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?