English verb conjugation
CAN FOSTER

Regular verb: foster - fostered - fostered

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can I not foster? can you not foster? can he not foster? can we not foster? can you not foster? can they not foster?	can I not be fostering? can you not be fostering? can he not be fostering? can we not be fostering? can you not be fostering? can they not be fostering?
Perfect	V-ing perfect
can I not have fostered? can you not have fostered? can he not have fostered? can we not have fostered? can you not have fostered? can they not have fostered?	can I not have been fostering? can you not have been fostering? can he not have been fostering? can we not have been fostering? can you not have been fostering? can they not have been fostering?