English verb conjugation
MUST INTERLACE

Regular verb: interlace - interlaced - interlaced

Affirmation

Simple form	V-ing form
I must interlace you must interlace he must interlace we must interlace you must interlace they must interlace	I must be interlacing you must be interlacing he must be interlacing we must be interlacing you must be interlacing they must be interlacing
Perfect	V-ing perfect
I must have interlaced you must have interlaced he must have interlaced we must have interlaced you must have interlaced they must have interlaced	I must have been interlacing you must have been interlacing he must have been interlacing we must have been interlacing you must have been interlacing they must have been interlacing

Negation

Simple form	V-ing form
I must not interlace you must not interlace he must not interlace we must not interlace you must not interlace they must not interlace	I must not be interlacing you must not be interlacing he must not be interlacing we must not be interlacing you must not be interlacing they must not be interlacing
Perfect	V-ing perfect
I must not have interlaced you must not have interlaced he must not have interlaced we must not have interlaced you must not have interlaced they must not have interlaced	I must not have been interlacing you must not have been interlacing he must not have been interlacing we must not have been interlacing you must not have been interlacing they must not have been interlacing

Interrogative form

Simple form	V-ing form
must I interlace? must you interlace? must he interlace? must we interlace? must you interlace? must they interlace?	must I be interlacing? must you be interlacing? must he be interlacing? must we be interlacing? must you be interlacing? must they be interlacing?
Perfect	V-ing perfect
must I have interlaced? must you have interlaced? must he have interlaced? must we have interlaced? must you have interlaced? must they have interlaced?	must I have been interlacing? must you have been interlacing? must he have been interlacing? must we have been interlacing? must you have been interlacing? must they have been interlacing?

Interro-negative form

Simple form	V-ing form
must I not interlace? must you not interlace? must he not interlace? must we not interlace? must you not interlace? must they not interlace?	must I not be interlacing? must you not be interlacing? must he not be interlacing? must we not be interlacing? must you not be interlacing? must they not be interlacing?
Perfect	V-ing perfect
must I not have interlaced? must you not have interlaced? must he not have interlaced? must we not have interlaced? must you not have interlaced? must they not have interlaced?	must I not have been interlacing? must you not have been interlacing? must he not have been interlacing? must we not have been interlacing? must you not have been interlacing? must they not have been interlacing?