English verb conjugation
MUST GUGGLE

Regular verb: guggle - guggled - guggled

Affirmation

Simple form	V-ing form
I must guggle you must guggle he must guggle we must guggle you must guggle they must guggle	I must be guggling you must be guggling he must be guggling we must be guggling you must be guggling they must be guggling
Perfect	V-ing perfect
I must have guggled you must have guggled he must have guggled we must have guggled you must have guggled they must have guggled	I must have been guggling you must have been guggling he must have been guggling we must have been guggling you must have been guggling they must have been guggling

Negation

Simple form	V-ing form
I must not guggle you must not guggle he must not guggle we must not guggle you must not guggle they must not guggle	I must not be guggling you must not be guggling he must not be guggling we must not be guggling you must not be guggling they must not be guggling
Perfect	V-ing perfect
I must not have guggled you must not have guggled he must not have guggled we must not have guggled you must not have guggled they must not have guggled	I must not have been guggling you must not have been guggling he must not have been guggling we must not have been guggling you must not have been guggling they must not have been guggling

Interrogative form

Simple form	V-ing form
must I guggle? must you guggle? must he guggle? must we guggle? must you guggle? must they guggle?	must I be guggling? must you be guggling? must he be guggling? must we be guggling? must you be guggling? must they be guggling?
Perfect	V-ing perfect
must I have guggled? must you have guggled? must he have guggled? must we have guggled? must you have guggled? must they have guggled?	must I have been guggling? must you have been guggling? must he have been guggling? must we have been guggling? must you have been guggling? must they have been guggling?

Interro-negative form

Simple form	V-ing form
must I not guggle? must you not guggle? must he not guggle? must we not guggle? must you not guggle? must they not guggle?	must I not be guggling? must you not be guggling? must he not be guggling? must we not be guggling? must you not be guggling? must they not be guggling?
Perfect	V-ing perfect
must I not have guggled? must you not have guggled? must he not have guggled? must we not have guggled? must you not have guggled? must they not have guggled?	must I not have been guggling? must you not have been guggling? must he not have been guggling? must we not have been guggling? must you not have been guggling? must they not have been guggling?