English verb conjugation
MUST SPACEWALK

Regular verb: spacewalk - spacewalked - spacewalked

Affirmation

Simple form	V-ing form
I must spacewalk you must spacewalk he must spacewalk we must spacewalk you must spacewalk they must spacewalk	I must be spacewalking you must be spacewalking he must be spacewalking we must be spacewalking you must be spacewalking they must be spacewalking
Perfect	V-ing perfect
I must have spacewalked you must have spacewalked he must have spacewalked we must have spacewalked you must have spacewalked they must have spacewalked	I must have been spacewalking you must have been spacewalking he must have been spacewalking we must have been spacewalking you must have been spacewalking they must have been spacewalking

Negation

Simple form	V-ing form
I must not spacewalk you must not spacewalk he must not spacewalk we must not spacewalk you must not spacewalk they must not spacewalk	I must not be spacewalking you must not be spacewalking he must not be spacewalking we must not be spacewalking you must not be spacewalking they must not be spacewalking
Perfect	V-ing perfect
I must not have spacewalked you must not have spacewalked he must not have spacewalked we must not have spacewalked you must not have spacewalked they must not have spacewalked	I must not have been spacewalking you must not have been spacewalking he must not have been spacewalking we must not have been spacewalking you must not have been spacewalking they must not have been spacewalking

Interrogative form

Simple form	V-ing form
must I spacewalk? must you spacewalk? must he spacewalk? must we spacewalk? must you spacewalk? must they spacewalk?	must I be spacewalking? must you be spacewalking? must he be spacewalking? must we be spacewalking? must you be spacewalking? must they be spacewalking?
Perfect	V-ing perfect
must I have spacewalked? must you have spacewalked? must he have spacewalked? must we have spacewalked? must you have spacewalked? must they have spacewalked?	must I have been spacewalking? must you have been spacewalking? must he have been spacewalking? must we have been spacewalking? must you have been spacewalking? must they have been spacewalking?

Interro-negative form

Simple form	V-ing form
must I not spacewalk? must you not spacewalk? must he not spacewalk? must we not spacewalk? must you not spacewalk? must they not spacewalk?	must I not be spacewalking? must you not be spacewalking? must he not be spacewalking? must we not be spacewalking? must you not be spacewalking? must they not be spacewalking?
Perfect	V-ing perfect
must I not have spacewalked? must you not have spacewalked? must he not have spacewalked? must we not have spacewalked? must you not have spacewalked? must they not have spacewalked?	must I not have been spacewalking? must you not have been spacewalking? must he not have been spacewalking? must we not have been spacewalking? must you not have been spacewalking? must they not have been spacewalking?