English verb conjugation
MUST NICHE

Regular verb: niche - niched - niched

Affirmation

Simple form	V-ing form
I must niche you must niche he must niche we must niche you must niche they must niche	I must be niching you must be niching he must be niching we must be niching you must be niching they must be niching
Perfect	V-ing perfect
I must have niched you must have niched he must have niched we must have niched you must have niched they must have niched	I must have been niching you must have been niching he must have been niching we must have been niching you must have been niching they must have been niching

Negation

Simple form	V-ing form
I must not niche you must not niche he must not niche we must not niche you must not niche they must not niche	I must not be niching you must not be niching he must not be niching we must not be niching you must not be niching they must not be niching
Perfect	V-ing perfect
I must not have niched you must not have niched he must not have niched we must not have niched you must not have niched they must not have niched	I must not have been niching you must not have been niching he must not have been niching we must not have been niching you must not have been niching they must not have been niching

Interrogative form

Simple form	V-ing form
must I niche? must you niche? must he niche? must we niche? must you niche? must they niche?	must I be niching? must you be niching? must he be niching? must we be niching? must you be niching? must they be niching?
Perfect	V-ing perfect
must I have niched? must you have niched? must he have niched? must we have niched? must you have niched? must they have niched?	must I have been niching? must you have been niching? must he have been niching? must we have been niching? must you have been niching? must they have been niching?

Interro-negative form

Simple form	V-ing form
must I not niche? must you not niche? must he not niche? must we not niche? must you not niche? must they not niche?	must I not be niching? must you not be niching? must he not be niching? must we not be niching? must you not be niching? must they not be niching?
Perfect	V-ing perfect
must I not have niched? must you not have niched? must he not have niched? must we not have niched? must you not have niched? must they not have niched?	must I not have been niching? must you not have been niching? must he not have been niching? must we not have been niching? must you not have been niching? must they not have been niching?