English verb conjugation
MUST SMELL

Irregular verb: smell - smelled, smelt - smelled, smelt

Affirmation

Simple form	V-ing form
I must smell you must smell he must smell we must smell you must smell they must smell	I must be smelling you must be smelling he must be smelling we must be smelling you must be smelling they must be smelling
Perfect	V-ing perfect
I must have smelled, smelt you must have smelled, smelt he must have smelled, smelt we must have smelled, smelt you must have smelled, smelt they must have smelled, smelt	I must have been smelling you must have been smelling he must have been smelling we must have been smelling you must have been smelling they must have been smelling

Negation

Simple form	V-ing form
I mustn't smell you mustn't smell he mustn't smell we mustn't smell you mustn't smell they mustn't smell	I mustn't be smelling you mustn't be smelling he mustn't be smelling we mustn't be smelling you mustn't be smelling they mustn't be smelling
Perfect	V-ing perfect
I mustn't have smelled, smelt you mustn't have smelled, smelt he mustn't have smelled, smelt we mustn't have smelled, smelt you mustn't have smelled, smelt they mustn't have smelled, smelt	I mustn't have been smelling you mustn't have been smelling he mustn't have been smelling we mustn't have been smelling you mustn't have been smelling they mustn't have been smelling

Interrogative form

Simple form	V-ing form
must I smell? must you smell? must he smell? must we smell? must you smell? must they smell?	must I be smelling? must you be smelling? must he be smelling? must we be smelling? must you be smelling? must they be smelling?
Perfect	V-ing perfect
must I have smelled, smelt? must you have smelled, smelt? must he have smelled, smelt? must we have smelled, smelt? must you have smelled, smelt? must they have smelled, smelt?	must I have been smelling? must you have been smelling? must he have been smelling? must we have been smelling? must you have been smelling? must they have been smelling?

Interro-negative form

Simple form	V-ing form
mustn't I smell? mustn't you smell? mustn't he smell? mustn't we smell? mustn't you smell? mustn't they smell?	mustn't I be smelling? mustn't you be smelling? mustn't he be smelling? mustn't we be smelling? mustn't you be smelling? mustn't they be smelling?
Perfect	V-ing perfect
mustn't I have smelled, smelt? mustn't you have smelled, smelt? mustn't he have smelled, smelt? mustn't we have smelled, smelt? mustn't you have smelled, smelt? mustn't they have smelled, smelt?	mustn't I have been smelling? mustn't you have been smelling? mustn't he have been smelling? mustn't we have been smelling? mustn't you have been smelling? mustn't they have been smelling?