English verb conjugation
MUST LUCK

Regular verb: luck - lucked - lucked

Affirmation

Simple form	V-ing form
I must luck you must luck he must luck we must luck you must luck they must luck	I must be lucking you must be lucking he must be lucking we must be lucking you must be lucking they must be lucking
Perfect	V-ing perfect
I must have lucked you must have lucked he must have lucked we must have lucked you must have lucked they must have lucked	I must have been lucking you must have been lucking he must have been lucking we must have been lucking you must have been lucking they must have been lucking

Negation

Simple form	V-ing form
I must not luck you must not luck he must not luck we must not luck you must not luck they must not luck	I must not be lucking you must not be lucking he must not be lucking we must not be lucking you must not be lucking they must not be lucking
Perfect	V-ing perfect
I must not have lucked you must not have lucked he must not have lucked we must not have lucked you must not have lucked they must not have lucked	I must not have been lucking you must not have been lucking he must not have been lucking we must not have been lucking you must not have been lucking they must not have been lucking

Interrogative form

Simple form	V-ing form
must I luck? must you luck? must he luck? must we luck? must you luck? must they luck?	must I be lucking? must you be lucking? must he be lucking? must we be lucking? must you be lucking? must they be lucking?
Perfect	V-ing perfect
must I have lucked? must you have lucked? must he have lucked? must we have lucked? must you have lucked? must they have lucked?	must I have been lucking? must you have been lucking? must he have been lucking? must we have been lucking? must you have been lucking? must they have been lucking?

Interro-negative form

Simple form	V-ing form
must I not luck? must you not luck? must he not luck? must we not luck? must you not luck? must they not luck?	must I not be lucking? must you not be lucking? must he not be lucking? must we not be lucking? must you not be lucking? must they not be lucking?
Perfect	V-ing perfect
must I not have lucked? must you not have lucked? must he not have lucked? must we not have lucked? must you not have lucked? must they not have lucked?	must I not have been lucking? must you not have been lucking? must he not have been lucking? must we not have been lucking? must you not have been lucking? must they not have been lucking?