English verb conjugation
MUST FRITTER

Regular verb: fritter - frittered - frittered

Affirmation

Simple form	V-ing form
I must fritter you must fritter he must fritter we must fritter you must fritter they must fritter	I must be frittering you must be frittering he must be frittering we must be frittering you must be frittering they must be frittering
Perfect	V-ing perfect
I must have frittered you must have frittered he must have frittered we must have frittered you must have frittered they must have frittered	I must have been frittering you must have been frittering he must have been frittering we must have been frittering you must have been frittering they must have been frittering

Negation

Simple form	V-ing form
I must not fritter you must not fritter he must not fritter we must not fritter you must not fritter they must not fritter	I must not be frittering you must not be frittering he must not be frittering we must not be frittering you must not be frittering they must not be frittering
Perfect	V-ing perfect
I must not have frittered you must not have frittered he must not have frittered we must not have frittered you must not have frittered they must not have frittered	I must not have been frittering you must not have been frittering he must not have been frittering we must not have been frittering you must not have been frittering they must not have been frittering

Interrogative form

Simple form	V-ing form
must I fritter? must you fritter? must he fritter? must we fritter? must you fritter? must they fritter?	must I be frittering? must you be frittering? must he be frittering? must we be frittering? must you be frittering? must they be frittering?
Perfect	V-ing perfect
must I have frittered? must you have frittered? must he have frittered? must we have frittered? must you have frittered? must they have frittered?	must I have been frittering? must you have been frittering? must he have been frittering? must we have been frittering? must you have been frittering? must they have been frittering?

Interro-negative form

Simple form	V-ing form
must I not fritter? must you not fritter? must he not fritter? must we not fritter? must you not fritter? must they not fritter?	must I not be frittering? must you not be frittering? must he not be frittering? must we not be frittering? must you not be frittering? must they not be frittering?
Perfect	V-ing perfect
must I not have frittered? must you not have frittered? must he not have frittered? must we not have frittered? must you not have frittered? must they not have frittered?	must I not have been frittering? must you not have been frittering? must he not have been frittering? must we not have been frittering? must you not have been frittering? must they not have been frittering?