English verb conjugation
MUST UNTUCK

Regular verb: untuck - untucked - untucked

Affirmation

Simple form	V-ing form
I must untuck you must untuck she must untuck we must untuck you must untuck they must untuck	I must be untucking you must be untucking she 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 she 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 she 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 she 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 she 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 she 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 she 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 she untuck? must we untuck? must you untuck? must they untuck?	must I be untucking? must you be untucking? must she 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 she 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 she 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 she 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 she 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 she 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 she not have been untucking? must we not have been untucking? must you not have been untucking? must they not have been untucking?