I could mention you could mention he could mention we could mention you could mention they could mention
Forma con V-ing
I could be mentioning you could be mentioning he could be mentioning we could be mentioning you could be mentioning they could be mentioning
Perfecto
I could have mentioned you could have mentioned he could have mentioned we could have mentioned you could have mentioned they could have mentioned
Perfecto con V-ing
I could have been mentioning you could have been mentioning he could have been mentioning we could have been mentioning you could have been mentioning they could have been mentioning
Negación
Forma simple
I couldn't mention you couldn't mention he couldn't mention we couldn't mention you couldn't mention they couldn't mention
Forma con V-ing
I couldn't be mentioning you couldn't be mentioning he couldn't be mentioning we couldn't be mentioning you couldn't be mentioning they couldn't be mentioning
Perfecto
I couldn't have mentioned you couldn't have mentioned he couldn't have mentioned we couldn't have mentioned you couldn't have mentioned they couldn't have mentioned
Perfecto con V-ing
I couldn't have been mentioning you couldn't have been mentioning he couldn't have been mentioning we couldn't have been mentioning you couldn't have been mentioning they couldn't have been mentioning
Forma interrogativa
Forma simple
could I mention? could you mention? could he mention? could we mention? could you mention? could they mention?
Forma con V-ing
could I be mentioning? could you be mentioning? could he be mentioning? could we be mentioning? could you be mentioning? could they be mentioning?
Perfecto
could I have mentioned? could you have mentioned? could he have mentioned? could we have mentioned? could you have mentioned? could they have mentioned?
Perfecto con V-ing
could I have been mentioning? could you have been mentioning? could he have been mentioning? could we have been mentioning? could you have been mentioning? could they have been mentioning?
Forma interro-negativa
Forma simple
couldn't I mention? couldn't you mention? couldn't he mention? couldn't we mention? couldn't you mention? couldn't they mention?
Forma con V-ing
couldn't I be mentioning? couldn't you be mentioning? couldn't he be mentioning? couldn't we be mentioning? couldn't you be mentioning? couldn't they be mentioning?
Perfecto
couldn't I have mentioned? couldn't you have mentioned? couldn't he have mentioned? couldn't we have mentioned? couldn't you have mentioned? couldn't they have mentioned?
Perfecto con V-ing
couldn't I have been mentioning? couldn't you have been mentioning? couldn't he have been mentioning? couldn't we have been mentioning? couldn't you have been mentioning? couldn't they have been mentioning?