English verb conjugation
MUST YAUP

Regular verb: yaup - yauped - yauped

Affirmation

Simple form	V-ing form
I must yaup you must yaup he must yaup we must yaup you must yaup they must yaup	I must be yauping you must be yauping he must be yauping we must be yauping you must be yauping they must be yauping
Perfect	V-ing perfect
I must have yauped you must have yauped he must have yauped we must have yauped you must have yauped they must have yauped	I must have been yauping you must have been yauping he must have been yauping we must have been yauping you must have been yauping they must have been yauping

Negation

Simple form	V-ing form
I mustn't yaup you mustn't yaup he mustn't yaup we mustn't yaup you mustn't yaup they mustn't yaup	I mustn't be yauping you mustn't be yauping he mustn't be yauping we mustn't be yauping you mustn't be yauping they mustn't be yauping
Perfect	V-ing perfect
I mustn't have yauped you mustn't have yauped he mustn't have yauped we mustn't have yauped you mustn't have yauped they mustn't have yauped	I mustn't have been yauping you mustn't have been yauping he mustn't have been yauping we mustn't have been yauping you mustn't have been yauping they mustn't have been yauping

Interrogative form

Simple form	V-ing form
must I yaup? must you yaup? must he yaup? must we yaup? must you yaup? must they yaup?	must I be yauping? must you be yauping? must he be yauping? must we be yauping? must you be yauping? must they be yauping?
Perfect	V-ing perfect
must I have yauped? must you have yauped? must he have yauped? must we have yauped? must you have yauped? must they have yauped?	must I have been yauping? must you have been yauping? must he have been yauping? must we have been yauping? must you have been yauping? must they have been yauping?

Interro-negative form

Simple form	V-ing form
mustn't I yaup? mustn't you yaup? mustn't he yaup? mustn't we yaup? mustn't you yaup? mustn't they yaup?	mustn't I be yauping? mustn't you be yauping? mustn't he be yauping? mustn't we be yauping? mustn't you be yauping? mustn't they be yauping?
Perfect	V-ing perfect
mustn't I have yauped? mustn't you have yauped? mustn't he have yauped? mustn't we have yauped? mustn't you have yauped? mustn't they have yauped?	mustn't I have been yauping? mustn't you have been yauping? mustn't he have been yauping? mustn't we have been yauping? mustn't you have been yauping? mustn't they have been yauping?