could officiate
Regular verb: officiate - officiated- officiated

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't officiate
you couldn't officiate
he couldn't officiate
we couldn't officiate
you couldn't officiate
they couldn't officiate 	I couldn't be officiating
you couldn't be officiating
he couldn't be officiating
we couldn't be officiating
you couldn't be officiating
they couldn't be officiating	I couldn't have officiated
you couldn't have officiated
he couldn't have officiated
we couldn't have officiated
you couldn't have officiated
they couldn't have officiated	I couldn't have been officiating
you couldn't have been officiating
he couldn't have been officiating
we couldn't have been officiating
you couldn't have been officiating
they couldn't have been officiating	

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

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I officiate?
couldn't you officiate?
couldn't he officiate?
couldn't we officiate?
couldn't you officiate?
couldn't they officiate? 	couldn't I be officiating?
couldn't you be officiating?
couldn't he be officiating?
couldn't we be officiating?
couldn't you be officiating?
couldn't they be officiating? 	couldn't I have officiated?
couldn't you have officiated?
couldn't he have officiated?
couldn't we have officiated?
couldn't you have officiated?
couldn't they have officiated? 	couldn't I have been officiating?
couldn't you have been officiating?
couldn't he have been officiating?
couldn't we have been officiating?
couldn't you have been officiating?
couldn't they have been officiating?