English verb conjugation
MUST UNTUCK

Regular verb: untuck - untucked - untucked

Affirmation

Simple form	V-ing form
I must untuck you must untuck he must untuck we must untuck you must untuck they must untuck	I must be untucking you must be untucking he must be untucking we must be untucking you must be untucking they must be untucking
Perfect	V-ing perfect
I must have untucked you must have untucked he must have untucked we must have untucked you must have untucked they must have untucked	I must have been untucking you must have been untucking he must have been untucking we must have been untucking you must have been untucking they must have been untucking

Negation

Simple form	V-ing form
I mustn't untuck you mustn't untuck he mustn't untuck we mustn't untuck you mustn't untuck they mustn't untuck	I mustn't be untucking you mustn't be untucking he mustn't be untucking we mustn't be untucking you mustn't be untucking they mustn't be untucking
Perfect	V-ing perfect
I mustn't have untucked you mustn't have untucked he mustn't have untucked we mustn't have untucked you mustn't have untucked they mustn't have untucked	I mustn't have been untucking you mustn't have been untucking he mustn't have been untucking we mustn't have been untucking you mustn't have been untucking they mustn't have been untucking

Interrogative form

Simple form	V-ing form
must I untuck? must you untuck? must he untuck? must we untuck? must you untuck? must they untuck?	must I be untucking? must you be untucking? must he be untucking? must we be untucking? must you be untucking? must they be untucking?
Perfect	V-ing perfect
must I have untucked? must you have untucked? must he have untucked? must we have untucked? must you have untucked? must they have untucked?	must I have been untucking? must you have been untucking? must he have been untucking? must we have been untucking? must you have been untucking? must they have been untucking?

Interro-negative form

Simple form	V-ing form
mustn't I untuck? mustn't you untuck? mustn't he untuck? mustn't we untuck? mustn't you untuck? mustn't they untuck?	mustn't I be untucking? mustn't you be untucking? mustn't he be untucking? mustn't we be untucking? mustn't you be untucking? mustn't they be untucking?
Perfect	V-ing perfect
mustn't I have untucked? mustn't you have untucked? mustn't he have untucked? mustn't we have untucked? mustn't you have untucked? mustn't they have untucked?	mustn't I have been untucking? mustn't you have been untucking? mustn't he have been untucking? mustn't we have been untucking? mustn't you have been untucking? mustn't they have been untucking?