English verb conjugation
MUST FOSTER

Regular verb: foster - fostered - fostered

Affirmation

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

Negation

Simple form	V-ing form
I must not foster you must not foster she must not foster we must not foster you must not foster they must not foster	I must not be fostering you must not be fostering she must not be fostering we must not be fostering you must not be fostering they must not be fostering
Perfect	V-ing perfect
I must not have fostered you must not have fostered she must not have fostered we must not have fostered you must not have fostered they must not have fostered	I must not have been fostering you must not have been fostering she must not have been fostering we must not have been fostering you must not have been fostering they must not have been fostering

Interrogative form

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

Interro-negative form

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