I could officiate you could officiate he could officiate we could officiate you could officiate they could officiate
Forme en V-ing
I could be officiating you could be officiating he could be officiating we could be officiating you could be officiating they could be officiating
Perfect
I could have officiated you could have officiated he could have officiated we could have officiated you could have officiated they could have officiated
Perfect en V-ing
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
Négation
Forme simple
I couldn't officiate you couldn't officiate he couldn't officiate we couldn't officiate you couldn't officiate they couldn't officiate
Forme en V-ing
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
Perfect
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
Perfect en V-ing
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
Forme interrogative
Forme simple
could I officiate? could you officiate? could he officiate? could we officiate? could you officiate? could they officiate?
Forme en V-ing
could I be officiating? could you be officiating? could he be officiating? could we be officiating? could you be officiating? could they be officiating?
Perfect
could I have officiated? could you have officiated? could he have officiated? could we have officiated? could you have officiated? could they have officiated?
Perfect en V-ing
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?
Forme interro-négative
Forme simple
couldn't I officiate? couldn't you officiate? couldn't he officiate? couldn't we officiate? couldn't you officiate? couldn't they officiate?
Forme en V-ing
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?
Perfect
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?
Perfect en V-ing
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?