must officiate
Regular verb: officiate - officiated- officiated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must officiate
you must officiate
she must officiate
we must officiate
you must officiate
they must officiate 	I must be officiating
you must be officiating
she must be officiating
we must be officiating
you must be officiating
they must be officiating	I must have officiated
you must have officiated
she must have officiated
we must have officiated
you must have officiated
they must have officiated	I must have been officiating
you must have been officiating
she must have been officiating
we must have been officiating
you must have been officiating
they must have been officiating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not officiate
you must not officiate
she must not officiate
we must not officiate
you must not officiate
they must not officiate 	I must not be officiating
you must not be officiating
she must not be officiating
we must not be officiating
you must not be officiating
they must not be officiating	I must not have officiated
you must not have officiated
she must not have officiated
we must not have officiated
you must not have officiated
they must not have officiated	I must not have been officiating
you must not have been officiating
she must not have been officiating
we must not have been officiating
you must not have been officiating
they must not have been officiating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I officiate?
must you officiate?
must she officiate?
must we officiate?
must you officiate?
must they officiate? 	must I be officiating?
must you be officiating?
must she be officiating?
must we be officiating?
must you be officiating?
must they be officiating? 	must I have officiated?
must you have officiated?
must she have officiated?
must we have officiated?
must you have officiated?
must they have officiated? 	must I have been officiating?
must you have been officiating?
must she have been officiating?
must we have been officiating?
must you have been officiating?
must they have been officiating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not officiate?
must you not officiate?
must she not officiate?
must we not officiate?
must you not officiate?
must they not officiate? 	must I not be officiating?
must you not be officiating?
must she not be officiating?
must we not be officiating?
must you not be officiating?
must they not be officiating? 	must I not have officiated?
must you not have officiated?
must she not have officiated?
must we not have officiated?
must you not have officiated?
must they not have officiated? 	must I not have been officiating?
must you not have been officiating?
must she not have been officiating?
must we not have been officiating?
must you not have been officiating?
must they not have been officiating?