English verb conjugation
MUST HIGH-GRADE

Regular verb: high-grade - high-graded - high-graded

Affirmation

Simple form	V-ing form
I must high-grade you must high-grade he must high-grade we must high-grade you must high-grade they must high-grade	I must be high-grading you must be high-grading he must be high-grading we must be high-grading you must be high-grading they must be high-grading
Perfect	V-ing perfect
I must have high-graded you must have high-graded he must have high-graded we must have high-graded you must have high-graded they must have high-graded	I must have been high-grading you must have been high-grading he must have been high-grading we must have been high-grading you must have been high-grading they must have been high-grading

Negation

Simple form	V-ing form
I mustn't high-grade you mustn't high-grade he mustn't high-grade we mustn't high-grade you mustn't high-grade they mustn't high-grade	I mustn't be high-grading you mustn't be high-grading he mustn't be high-grading we mustn't be high-grading you mustn't be high-grading they mustn't be high-grading
Perfect	V-ing perfect
I mustn't have high-graded you mustn't have high-graded he mustn't have high-graded we mustn't have high-graded you mustn't have high-graded they mustn't have high-graded	I mustn't have been high-grading you mustn't have been high-grading he mustn't have been high-grading we mustn't have been high-grading you mustn't have been high-grading they mustn't have been high-grading

Interrogative form

Simple form	V-ing form
must I high-grade? must you high-grade? must he high-grade? must we high-grade? must you high-grade? must they high-grade?	must I be high-grading? must you be high-grading? must he be high-grading? must we be high-grading? must you be high-grading? must they be high-grading?
Perfect	V-ing perfect
must I have high-graded? must you have high-graded? must he have high-graded? must we have high-graded? must you have high-graded? must they have high-graded?	must I have been high-grading? must you have been high-grading? must he have been high-grading? must we have been high-grading? must you have been high-grading? must they have been high-grading?

Interro-negative form

Simple form	V-ing form
mustn't I high-grade? mustn't you high-grade? mustn't he high-grade? mustn't we high-grade? mustn't you high-grade? mustn't they high-grade?	mustn't I be high-grading? mustn't you be high-grading? mustn't he be high-grading? mustn't we be high-grading? mustn't you be high-grading? mustn't they be high-grading?
Perfect	V-ing perfect
mustn't I have high-graded? mustn't you have high-graded? mustn't he have high-graded? mustn't we have high-graded? mustn't you have high-graded? mustn't they have high-graded?	mustn't I have been high-grading? mustn't you have been high-grading? mustn't he have been high-grading? mustn't we have been high-grading? mustn't you have been high-grading? mustn't they have been high-grading?