English verb conjugation
MUST ROVC

Regular verb: rovc - rovced - rovced

Affirmation

Simple form	V-ing form
I must rovc you must rovc he must rovc we must rovc you must rovc they must rovc	I must be rovcing you must be rovcing he must be rovcing we must be rovcing you must be rovcing they must be rovcing
Perfect	V-ing perfect
I must have rovced you must have rovced he must have rovced we must have rovced you must have rovced they must have rovced	I must have been rovcing you must have been rovcing he must have been rovcing we must have been rovcing you must have been rovcing they must have been rovcing

Negation

Simple form	V-ing form
I mustn't rovc you mustn't rovc he mustn't rovc we mustn't rovc you mustn't rovc they mustn't rovc	I mustn't be rovcing you mustn't be rovcing he mustn't be rovcing we mustn't be rovcing you mustn't be rovcing they mustn't be rovcing
Perfect	V-ing perfect
I mustn't have rovced you mustn't have rovced he mustn't have rovced we mustn't have rovced you mustn't have rovced they mustn't have rovced	I mustn't have been rovcing you mustn't have been rovcing he mustn't have been rovcing we mustn't have been rovcing you mustn't have been rovcing they mustn't have been rovcing

Interrogative form

Simple form	V-ing form
must I rovc? must you rovc? must he rovc? must we rovc? must you rovc? must they rovc?	must I be rovcing? must you be rovcing? must he be rovcing? must we be rovcing? must you be rovcing? must they be rovcing?
Perfect	V-ing perfect
must I have rovced? must you have rovced? must he have rovced? must we have rovced? must you have rovced? must they have rovced?	must I have been rovcing? must you have been rovcing? must he have been rovcing? must we have been rovcing? must you have been rovcing? must they have been rovcing?

Interro-negative form

Simple form	V-ing form
mustn't I rovc? mustn't you rovc? mustn't he rovc? mustn't we rovc? mustn't you rovc? mustn't they rovc?	mustn't I be rovcing? mustn't you be rovcing? mustn't he be rovcing? mustn't we be rovcing? mustn't you be rovcing? mustn't they be rovcing?
Perfect	V-ing perfect
mustn't I have rovced? mustn't you have rovced? mustn't he have rovced? mustn't we have rovced? mustn't you have rovced? mustn't they have rovced?	mustn't I have been rovcing? mustn't you have been rovcing? mustn't he have been rovcing? mustn't we have been rovcing? mustn't you have been rovcing? mustn't they have been rovcing?