English verb conjugation
MUST REFILL

Regular verb: refill - refilled - refilled

Affirmation

Simple form	V-ing form
I must refill you must refill she must refill we must refill you must refill they must refill	I must be refilling you must be refilling she must be refilling we must be refilling you must be refilling they must be refilling
Perfect	V-ing perfect
I must have refilled you must have refilled she must have refilled we must have refilled you must have refilled they must have refilled	I must have been refilling you must have been refilling she must have been refilling we must have been refilling you must have been refilling they must have been refilling

Negation

Simple form	V-ing form
I mustn't refill you mustn't refill she mustn't refill we mustn't refill you mustn't refill they mustn't refill	I mustn't be refilling you mustn't be refilling she mustn't be refilling we mustn't be refilling you mustn't be refilling they mustn't be refilling
Perfect	V-ing perfect
I mustn't have refilled you mustn't have refilled she mustn't have refilled we mustn't have refilled you mustn't have refilled they mustn't have refilled	I mustn't have been refilling you mustn't have been refilling she mustn't have been refilling we mustn't have been refilling you mustn't have been refilling they mustn't have been refilling

Interrogative form

Simple form	V-ing form
must I refill? must you refill? must she refill? must we refill? must you refill? must they refill?	must I be refilling? must you be refilling? must she be refilling? must we be refilling? must you be refilling? must they be refilling?
Perfect	V-ing perfect
must I have refilled? must you have refilled? must she have refilled? must we have refilled? must you have refilled? must they have refilled?	must I have been refilling? must you have been refilling? must she have been refilling? must we have been refilling? must you have been refilling? must they have been refilling?

Interro-negative form

Simple form	V-ing form
mustn't I refill? mustn't you refill? mustn't she refill? mustn't we refill? mustn't you refill? mustn't they refill?	mustn't I be refilling? mustn't you be refilling? mustn't she be refilling? mustn't we be refilling? mustn't you be refilling? mustn't they be refilling?
Perfect	V-ing perfect
mustn't I have refilled? mustn't you have refilled? mustn't she have refilled? mustn't we have refilled? mustn't you have refilled? mustn't they have refilled?	mustn't I have been refilling? mustn't you have been refilling? mustn't she have been refilling? mustn't we have been refilling? mustn't you have been refilling? mustn't they have been refilling?