English verb conjugation
COULD AGE

Regular verb: age - aged - aged

Affirmation

Simple form	V-ing form
I could age you could age he could age we could age you could age they could age	I could be aging you could be aging he could be aging we could be aging you could be aging they could be aging
Perfect	V-ing perfect
I could have aged you could have aged he could have aged we could have aged you could have aged they could have aged	I could have been aging you could have been aging he could have been aging we could have been aging you could have been aging they could have been aging

Negation

Simple form	V-ing form
I couldn't age you couldn't age he couldn't age we couldn't age you couldn't age they couldn't age	I couldn't be aging you couldn't be aging he couldn't be aging we couldn't be aging you couldn't be aging they couldn't be aging
Perfect	V-ing perfect
I couldn't have aged you couldn't have aged he couldn't have aged we couldn't have aged you couldn't have aged they couldn't have aged	I couldn't have been aging you couldn't have been aging he couldn't have been aging we couldn't have been aging you couldn't have been aging they couldn't have been aging

Interrogative form

Simple form	V-ing form
could I age? could you age? could he age? could we age? could you age? could they age?	could I be aging? could you be aging? could he be aging? could we be aging? could you be aging? could they be aging?
Perfect	V-ing perfect
could I have aged? could you have aged? could he have aged? could we have aged? could you have aged? could they have aged?	could I have been aging? could you have been aging? could he have been aging? could we have been aging? could you have been aging? could they have been aging?

Interro-negative form

Simple form	V-ing form
couldn't I age? couldn't you age? couldn't he age? couldn't we age? couldn't you age? couldn't they age?	couldn't I be aging? couldn't you be aging? couldn't he be aging? couldn't we be aging? couldn't you be aging? couldn't they be aging?
Perfect	V-ing perfect
couldn't I have aged? couldn't you have aged? couldn't he have aged? couldn't we have aged? couldn't you have aged? couldn't they have aged?	couldn't I have been aging? couldn't you have been aging? couldn't he have been aging? couldn't we have been aging? couldn't you have been aging? couldn't they have been aging?