English verb conjugation
MUST INFILL

Regular verb: infill - infilled - infilled

Affirmation

Simple form	V-ing form
I must infill you must infill she must infill we must infill you must infill they must infill	I must be infilling you must be infilling she must be infilling we must be infilling you must be infilling they must be infilling
Perfect	V-ing perfect
I must have infilled you must have infilled she must have infilled we must have infilled you must have infilled they must have infilled	I must have been infilling you must have been infilling she must have been infilling we must have been infilling you must have been infilling they must have been infilling

Negation

Simple form	V-ing form
I must not infill you must not infill she must not infill we must not infill you must not infill they must not infill	I must not be infilling you must not be infilling she must not be infilling we must not be infilling you must not be infilling they must not be infilling
Perfect	V-ing perfect
I must not have infilled you must not have infilled she must not have infilled we must not have infilled you must not have infilled they must not have infilled	I must not have been infilling you must not have been infilling she must not have been infilling we must not have been infilling you must not have been infilling they must not have been infilling

Interrogative form

Simple form	V-ing form
must I infill? must you infill? must she infill? must we infill? must you infill? must they infill?	must I be infilling? must you be infilling? must she be infilling? must we be infilling? must you be infilling? must they be infilling?
Perfect	V-ing perfect
must I have infilled? must you have infilled? must she have infilled? must we have infilled? must you have infilled? must they have infilled?	must I have been infilling? must you have been infilling? must she have been infilling? must we have been infilling? must you have been infilling? must they have been infilling?

Interro-negative form

Simple form	V-ing form
must I not infill? must you not infill? must she not infill? must we not infill? must you not infill? must they not infill?	must I not be infilling? must you not be infilling? must she not be infilling? must we not be infilling? must you not be infilling? must they not be infilling?
Perfect	V-ing perfect
must I not have infilled? must you not have infilled? must she not have infilled? must we not have infilled? must you not have infilled? must they not have infilled?	must I not have been infilling? must you not have been infilling? must she not have been infilling? must we not have been infilling? must you not have been infilling? must they not have been infilling?