English verb conjugation
COULD FOSTER

Regular verb: foster - fostered - fostered

Affirmation

Simple form	V-ing form
I could foster you could foster he could foster we could foster you could foster they could foster	I could be fostering you could be fostering he could be fostering we could be fostering you could be fostering they could be fostering
Perfect	V-ing perfect
I could have fostered you could have fostered he could have fostered we could have fostered you could have fostered they could have fostered	I could have been fostering you could have been fostering he could have been fostering we could have been fostering you could have been fostering they could have been fostering

Negation

Simple form	V-ing form
I couldn't foster you couldn't foster he couldn't foster we couldn't foster you couldn't foster they couldn't foster	I couldn't be fostering you couldn't be fostering he couldn't be fostering we couldn't be fostering you couldn't be fostering they couldn't be fostering
Perfect	V-ing perfect
I couldn't have fostered you couldn't have fostered he couldn't have fostered we couldn't have fostered you couldn't have fostered they couldn't have fostered	I couldn't have been fostering you couldn't have been fostering he couldn't have been fostering we couldn't have been fostering you couldn't have been fostering they couldn't have been fostering

Interrogative form

Simple form	V-ing form
could I foster? could you foster? could he foster? could we foster? could you foster? could they foster?	could I be fostering? could you be fostering? could he be fostering? could we be fostering? could you be fostering? could they be fostering?
Perfect	V-ing perfect
could I have fostered? could you have fostered? could he have fostered? could we have fostered? could you have fostered? could they have fostered?	could I have been fostering? could you have been fostering? could he have been fostering? could we have been fostering? could you have been fostering? could they have been fostering?

Interro-negative form

Simple form	V-ing form
couldn't I foster? couldn't you foster? couldn't he foster? couldn't we foster? couldn't you foster? couldn't they foster?	couldn't I be fostering? couldn't you be fostering? couldn't he be fostering? couldn't we be fostering? couldn't you be fostering? couldn't they be fostering?
Perfect	V-ing perfect
couldn't I have fostered? couldn't you have fostered? couldn't he have fostered? couldn't we have fostered? couldn't you have fostered? couldn't they have fostered?	couldn't I have been fostering? couldn't you have been fostering? couldn't he have been fostering? couldn't we have been fostering? couldn't you have been fostering? couldn't they have been fostering?