English verb conjugation
MUST WINDOW-DRESS

Regular verb: window-dress - window-dressed - window-dressed

Affirmation

Simple form	V-ing form
I must window-dress you must window-dress she must window-dress we must window-dress you must window-dress they must window-dress	I must be window-dressing you must be window-dressing she must be window-dressing we must be window-dressing you must be window-dressing they must be window-dressing
Perfect	V-ing perfect
I must have window-dressed you must have window-dressed she must have window-dressed we must have window-dressed you must have window-dressed they must have window-dressed	I must have been window-dressing you must have been window-dressing she must have been window-dressing we must have been window-dressing you must have been window-dressing they must have been window-dressing

Negation

Simple form	V-ing form
I mustn't window-dress you mustn't window-dress she mustn't window-dress we mustn't window-dress you mustn't window-dress they mustn't window-dress	I mustn't be window-dressing you mustn't be window-dressing she mustn't be window-dressing we mustn't be window-dressing you mustn't be window-dressing they mustn't be window-dressing
Perfect	V-ing perfect
I mustn't have window-dressed you mustn't have window-dressed she mustn't have window-dressed we mustn't have window-dressed you mustn't have window-dressed they mustn't have window-dressed	I mustn't have been window-dressing you mustn't have been window-dressing she mustn't have been window-dressing we mustn't have been window-dressing you mustn't have been window-dressing they mustn't have been window-dressing

Interrogative form

Simple form	V-ing form
must I window-dress? must you window-dress? must she window-dress? must we window-dress? must you window-dress? must they window-dress?	must I be window-dressing? must you be window-dressing? must she be window-dressing? must we be window-dressing? must you be window-dressing? must they be window-dressing?
Perfect	V-ing perfect
must I have window-dressed? must you have window-dressed? must she have window-dressed? must we have window-dressed? must you have window-dressed? must they have window-dressed?	must I have been window-dressing? must you have been window-dressing? must she have been window-dressing? must we have been window-dressing? must you have been window-dressing? must they have been window-dressing?

Interro-negative form

Simple form	V-ing form
mustn't I window-dress? mustn't you window-dress? mustn't she window-dress? mustn't we window-dress? mustn't you window-dress? mustn't they window-dress?	mustn't I be window-dressing? mustn't you be window-dressing? mustn't she be window-dressing? mustn't we be window-dressing? mustn't you be window-dressing? mustn't they be window-dressing?
Perfect	V-ing perfect
mustn't I have window-dressed? mustn't you have window-dressed? mustn't she have window-dressed? mustn't we have window-dressed? mustn't you have window-dressed? mustn't they have window-dressed?	mustn't I have been window-dressing? mustn't you have been window-dressing? mustn't she have been window-dressing? mustn't we have been window-dressing? mustn't you have been window-dressing? mustn't they have been window-dressing?