English verb conjugation
MUST EXPAND

Regular verb: expand - expanded - expanded

Affirmation

Simple form	V-ing form
I must expand you must expand he must expand we must expand you must expand they must expand	I must be expanding you must be expanding he must be expanding we must be expanding you must be expanding they must be expanding
Perfect	V-ing perfect
I must have expanded you must have expanded he must have expanded we must have expanded you must have expanded they must have expanded	I must have been expanding you must have been expanding he must have been expanding we must have been expanding you must have been expanding they must have been expanding

Negation

Simple form	V-ing form
I must not expand you must not expand he must not expand we must not expand you must not expand they must not expand	I must not be expanding you must not be expanding he must not be expanding we must not be expanding you must not be expanding they must not be expanding
Perfect	V-ing perfect
I must not have expanded you must not have expanded he must not have expanded we must not have expanded you must not have expanded they must not have expanded	I must not have been expanding you must not have been expanding he must not have been expanding we must not have been expanding you must not have been expanding they must not have been expanding

Interrogative form

Simple form	V-ing form
must I expand? must you expand? must he expand? must we expand? must you expand? must they expand?	must I be expanding? must you be expanding? must he be expanding? must we be expanding? must you be expanding? must they be expanding?
Perfect	V-ing perfect
must I have expanded? must you have expanded? must he have expanded? must we have expanded? must you have expanded? must they have expanded?	must I have been expanding? must you have been expanding? must he have been expanding? must we have been expanding? must you have been expanding? must they have been expanding?

Interro-negative form

Simple form	V-ing form
must I not expand? must you not expand? must he not expand? must we not expand? must you not expand? must they not expand?	must I not be expanding? must you not be expanding? must he not be expanding? must we not be expanding? must you not be expanding? must they not be expanding?
Perfect	V-ing perfect
must I not have expanded? must you not have expanded? must he not have expanded? must we not have expanded? must you not have expanded? must they not have expanded?	must I not have been expanding? must you not have been expanding? must he not have been expanding? must we not have been expanding? must you not have been expanding? must they not have been expanding?