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 must not smell you must not smell he must not smell we must not smell you must not smell they must not smell	I must not be smelling you must not be smelling he must not be smelling we must not be smelling you must not be smelling they must not be smelling
Perfect	V-ing perfect
I must not have smelled, smelt you must not have smelled, smelt he must not have smelled, smelt we must not have smelled, smelt you must not have smelled, smelt they must not have smelled, smelt	I must not have been smelling you must not have been smelling he must not have been smelling we must not have been smelling you must not have been smelling they must not 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
must I not smell? must you not smell? must he not smell? must we not smell? must you not smell? must they not smell?	must I not be smelling? must you not be smelling? must he not be smelling? must we not be smelling? must you not be smelling? must they not be smelling?
Perfect	V-ing perfect
must I not have smelled, smelt? must you not have smelled, smelt? must he not have smelled, smelt? must we not have smelled, smelt? must you not have smelled, smelt? must they not have smelled, smelt?	must I not have been smelling? must you not have been smelling? must he not have been smelling? must we not have been smelling? must you not have been smelling? must they not have been smelling?