I must loco you must loco he must loco we must loco you must loco they must loco
V-ing form
I must be locoing you must be locoing he must be locoing we must be locoing you must be locoing they must be locoing
Perfect
I must have locoed you must have locoed he must have locoed we must have locoed you must have locoed they must have locoed
V-ing perfect
I must have been locoing you must have been locoing he must have been locoing we must have been locoing you must have been locoing they must have been locoing
Negation
Simple form
I must not loco you must not loco he must not loco we must not loco you must not loco they must not loco
V-ing form
I must not be locoing you must not be locoing he must not be locoing we must not be locoing you must not be locoing they must not be locoing
Perfect
I must not have locoed you must not have locoed he must not have locoed we must not have locoed you must not have locoed they must not have locoed
V-ing perfect
I must not have been locoing you must not have been locoing he must not have been locoing we must not have been locoing you must not have been locoing they must not have been locoing
Interrogative form
Simple form
must I loco? must you loco? must he loco? must we loco? must you loco? must they loco?
V-ing form
must I be locoing? must you be locoing? must he be locoing? must we be locoing? must you be locoing? must they be locoing?
Perfect
must I have locoed? must you have locoed? must he have locoed? must we have locoed? must you have locoed? must they have locoed?
V-ing perfect
must I have been locoing? must you have been locoing? must he have been locoing? must we have been locoing? must you have been locoing? must they have been locoing?
Interro-negative form
Simple form
must I not loco? must you not loco? must he not loco? must we not loco? must you not loco? must they not loco?
V-ing form
must I not be locoing? must you not be locoing? must he not be locoing? must we not be locoing? must you not be locoing? must they not be locoing?
Perfect
must I not have locoed? must you not have locoed? must he not have locoed? must we not have locoed? must you not have locoed? must they not have locoed?
V-ing perfect
must I not have been locoing? must you not have been locoing? must he not have been locoing? must we not have been locoing? must you not have been locoing? must they not have been locoing?