English verb conjugation
MUST CHUM

Regular verb: chum - chummed - chummed

Affirmation

Simple form	V-ing form
I must chum you must chum he must chum we must chum you must chum they must chum	I must be chumming you must be chumming he must be chumming we must be chumming you must be chumming they must be chumming
Perfect	V-ing perfect
I must have chummed you must have chummed he must have chummed we must have chummed you must have chummed they must have chummed	I must have been chumming you must have been chumming he must have been chumming we must have been chumming you must have been chumming they must have been chumming

Negation

Simple form	V-ing form
I must not chum you must not chum he must not chum we must not chum you must not chum they must not chum	I must not be chumming you must not be chumming he must not be chumming we must not be chumming you must not be chumming they must not be chumming
Perfect	V-ing perfect
I must not have chummed you must not have chummed he must not have chummed we must not have chummed you must not have chummed they must not have chummed	I must not have been chumming you must not have been chumming he must not have been chumming we must not have been chumming you must not have been chumming they must not have been chumming

Interrogative form

Simple form	V-ing form
must I chum? must you chum? must he chum? must we chum? must you chum? must they chum?	must I be chumming? must you be chumming? must he be chumming? must we be chumming? must you be chumming? must they be chumming?
Perfect	V-ing perfect
must I have chummed? must you have chummed? must he have chummed? must we have chummed? must you have chummed? must they have chummed?	must I have been chumming? must you have been chumming? must he have been chumming? must we have been chumming? must you have been chumming? must they have been chumming?

Interro-negative form

Simple form	V-ing form
must I not chum? must you not chum? must he not chum? must we not chum? must you not chum? must they not chum?	must I not be chumming? must you not be chumming? must he not be chumming? must we not be chumming? must you not be chumming? must they not be chumming?
Perfect	V-ing perfect
must I not have chummed? must you not have chummed? must he not have chummed? must we not have chummed? must you not have chummed? must they not have chummed?	must I not have been chumming? must you not have been chumming? must he not have been chumming? must we not have been chumming? must you not have been chumming? must they not have been chumming?