English verb conjugation
MUST DEFINE

Regular verb: define - defined - defined

Affirmation

Simple form	V-ing form
I must define you must define she must define we must define you must define they must define	I must be defining you must be defining she must be defining we must be defining you must be defining they must be defining
Perfect	V-ing perfect
I must have defined you must have defined she must have defined we must have defined you must have defined they must have defined	I must have been defining you must have been defining she must have been defining we must have been defining you must have been defining they must have been defining

Negation

Simple form	V-ing form
I must not define you must not define she must not define we must not define you must not define they must not define	I must not be defining you must not be defining she must not be defining we must not be defining you must not be defining they must not be defining
Perfect	V-ing perfect
I must not have defined you must not have defined she must not have defined we must not have defined you must not have defined they must not have defined	I must not have been defining you must not have been defining she must not have been defining we must not have been defining you must not have been defining they must not have been defining

Interrogative form

Simple form	V-ing form
must I define? must you define? must she define? must we define? must you define? must they define?	must I be defining? must you be defining? must she be defining? must we be defining? must you be defining? must they be defining?
Perfect	V-ing perfect
must I have defined? must you have defined? must she have defined? must we have defined? must you have defined? must they have defined?	must I have been defining? must you have been defining? must she have been defining? must we have been defining? must you have been defining? must they have been defining?

Interro-negative form

Simple form	V-ing form
must I not define? must you not define? must she not define? must we not define? must you not define? must they not define?	must I not be defining? must you not be defining? must she not be defining? must we not be defining? must you not be defining? must they not be defining?
Perfect	V-ing perfect
must I not have defined? must you not have defined? must she not have defined? must we not have defined? must you not have defined? must they not have defined?	must I not have been defining? must you not have been defining? must she not have been defining? must we not have been defining? must you not have been defining? must they not have been defining?