English verb conjugation
MUST LUMP

Regular verb: lump - lumped - lumped

Affirmation

Simple form	V-ing form
I must lump you must lump he must lump we must lump you must lump they must lump	I must be lumping you must be lumping he must be lumping we must be lumping you must be lumping they must be lumping
Perfect	V-ing perfect
I must have lumped you must have lumped he must have lumped we must have lumped you must have lumped they must have lumped	I must have been lumping you must have been lumping he must have been lumping we must have been lumping you must have been lumping they must have been lumping

Negation

Simple form	V-ing form
I mustn't lump you mustn't lump he mustn't lump we mustn't lump you mustn't lump they mustn't lump	I mustn't be lumping you mustn't be lumping he mustn't be lumping we mustn't be lumping you mustn't be lumping they mustn't be lumping
Perfect	V-ing perfect
I mustn't have lumped you mustn't have lumped he mustn't have lumped we mustn't have lumped you mustn't have lumped they mustn't have lumped	I mustn't have been lumping you mustn't have been lumping he mustn't have been lumping we mustn't have been lumping you mustn't have been lumping they mustn't have been lumping

Interrogative form

Simple form	V-ing form
must I lump? must you lump? must he lump? must we lump? must you lump? must they lump?	must I be lumping? must you be lumping? must he be lumping? must we be lumping? must you be lumping? must they be lumping?
Perfect	V-ing perfect
must I have lumped? must you have lumped? must he have lumped? must we have lumped? must you have lumped? must they have lumped?	must I have been lumping? must you have been lumping? must he have been lumping? must we have been lumping? must you have been lumping? must they have been lumping?

Interro-negative form

Simple form	V-ing form
mustn't I lump? mustn't you lump? mustn't he lump? mustn't we lump? mustn't you lump? mustn't they lump?	mustn't I be lumping? mustn't you be lumping? mustn't he be lumping? mustn't we be lumping? mustn't you be lumping? mustn't they be lumping?
Perfect	V-ing perfect
mustn't I have lumped? mustn't you have lumped? mustn't he have lumped? mustn't we have lumped? mustn't you have lumped? mustn't they have lumped?	mustn't I have been lumping? mustn't you have been lumping? mustn't he have been lumping? mustn't we have been lumping? mustn't you have been lumping? mustn't they have been lumping?