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 must not untuck you must not untuck he must not untuck we must not untuck you must not untuck they must not untuck	I must not be untucking you must not be untucking he must not be untucking we must not be untucking you must not be untucking they must not be untucking
Perfect	V-ing perfect
I must not have untucked you must not have untucked he must not have untucked we must not have untucked you must not have untucked they must not have untucked	I must not have been untucking you must not have been untucking he must not have been untucking we must not have been untucking you must not have been untucking they must not 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
must I not untuck? must you not untuck? must he not untuck? must we not untuck? must you not untuck? must they not untuck?	must I not be untucking? must you not be untucking? must he not be untucking? must we not be untucking? must you not be untucking? must they not be untucking?
Perfect	V-ing perfect
must I not have untucked? must you not have untucked? must he not have untucked? must we not have untucked? must you not have untucked? must they not have untucked?	must I not have been untucking? must you not have been untucking? must he not have been untucking? must we not have been untucking? must you not have been untucking? must they not have been untucking?