English verb conjugation
MUST FETCH

Regular verb: fetch - fetched - fetched

Affirmation

Simple form	V-ing form
I must fetch you must fetch he must fetch we must fetch you must fetch they must fetch	I must be fetching you must be fetching he must be fetching we must be fetching you must be fetching they must be fetching
Perfect	V-ing perfect
I must have fetched you must have fetched he must have fetched we must have fetched you must have fetched they must have fetched	I must have been fetching you must have been fetching he must have been fetching we must have been fetching you must have been fetching they must have been fetching

Negation

Simple form	V-ing form
I mustn't fetch you mustn't fetch he mustn't fetch we mustn't fetch you mustn't fetch they mustn't fetch	I mustn't be fetching you mustn't be fetching he mustn't be fetching we mustn't be fetching you mustn't be fetching they mustn't be fetching
Perfect	V-ing perfect
I mustn't have fetched you mustn't have fetched he mustn't have fetched we mustn't have fetched you mustn't have fetched they mustn't have fetched	I mustn't have been fetching you mustn't have been fetching he mustn't have been fetching we mustn't have been fetching you mustn't have been fetching they mustn't have been fetching

Interrogative form

Simple form	V-ing form
must I fetch? must you fetch? must he fetch? must we fetch? must you fetch? must they fetch?	must I be fetching? must you be fetching? must he be fetching? must we be fetching? must you be fetching? must they be fetching?
Perfect	V-ing perfect
must I have fetched? must you have fetched? must he have fetched? must we have fetched? must you have fetched? must they have fetched?	must I have been fetching? must you have been fetching? must he have been fetching? must we have been fetching? must you have been fetching? must they have been fetching?

Interro-negative form

Simple form	V-ing form
mustn't I fetch? mustn't you fetch? mustn't he fetch? mustn't we fetch? mustn't you fetch? mustn't they fetch?	mustn't I be fetching? mustn't you be fetching? mustn't he be fetching? mustn't we be fetching? mustn't you be fetching? mustn't they be fetching?
Perfect	V-ing perfect
mustn't I have fetched? mustn't you have fetched? mustn't he have fetched? mustn't we have fetched? mustn't you have fetched? mustn't they have fetched?	mustn't I have been fetching? mustn't you have been fetching? mustn't he have been fetching? mustn't we have been fetching? mustn't you have been fetching? mustn't they have been fetching?