English verb conjugation
MUST CUFF

Regular verb: cuff - cuffed - cuffed

Affirmation

Simple form	V-ing form
I must cuff you must cuff he must cuff we must cuff you must cuff they must cuff	I must be cuffing you must be cuffing he must be cuffing we must be cuffing you must be cuffing they must be cuffing
Perfect	V-ing perfect
I must have cuffed you must have cuffed he must have cuffed we must have cuffed you must have cuffed they must have cuffed	I must have been cuffing you must have been cuffing he must have been cuffing we must have been cuffing you must have been cuffing they must have been cuffing

Negation

Simple form	V-ing form
I mustn't cuff you mustn't cuff he mustn't cuff we mustn't cuff you mustn't cuff they mustn't cuff	I mustn't be cuffing you mustn't be cuffing he mustn't be cuffing we mustn't be cuffing you mustn't be cuffing they mustn't be cuffing
Perfect	V-ing perfect
I mustn't have cuffed you mustn't have cuffed he mustn't have cuffed we mustn't have cuffed you mustn't have cuffed they mustn't have cuffed	I mustn't have been cuffing you mustn't have been cuffing he mustn't have been cuffing we mustn't have been cuffing you mustn't have been cuffing they mustn't have been cuffing

Interrogative form

Simple form	V-ing form
must I cuff? must you cuff? must he cuff? must we cuff? must you cuff? must they cuff?	must I be cuffing? must you be cuffing? must he be cuffing? must we be cuffing? must you be cuffing? must they be cuffing?
Perfect	V-ing perfect
must I have cuffed? must you have cuffed? must he have cuffed? must we have cuffed? must you have cuffed? must they have cuffed?	must I have been cuffing? must you have been cuffing? must he have been cuffing? must we have been cuffing? must you have been cuffing? must they have been cuffing?

Interro-negative form

Simple form	V-ing form
mustn't I cuff? mustn't you cuff? mustn't he cuff? mustn't we cuff? mustn't you cuff? mustn't they cuff?	mustn't I be cuffing? mustn't you be cuffing? mustn't he be cuffing? mustn't we be cuffing? mustn't you be cuffing? mustn't they be cuffing?
Perfect	V-ing perfect
mustn't I have cuffed? mustn't you have cuffed? mustn't he have cuffed? mustn't we have cuffed? mustn't you have cuffed? mustn't they have cuffed?	mustn't I have been cuffing? mustn't you have been cuffing? mustn't he have been cuffing? mustn't we have been cuffing? mustn't you have been cuffing? mustn't they have been cuffing?