English verb conjugation
MUST MURMUR

Regular verb: murmur - murmured - murmured

Affirmation

Simple form	V-ing form
I must murmur you must murmur she must murmur we must murmur you must murmur they must murmur	I must be murmuring you must be murmuring she must be murmuring we must be murmuring you must be murmuring they must be murmuring
Perfect	V-ing perfect
I must have murmured you must have murmured she must have murmured we must have murmured you must have murmured they must have murmured	I must have been murmuring you must have been murmuring she must have been murmuring we must have been murmuring you must have been murmuring they must have been murmuring

Negation

Simple form	V-ing form
I mustn't murmur you mustn't murmur she mustn't murmur we mustn't murmur you mustn't murmur they mustn't murmur	I mustn't be murmuring you mustn't be murmuring she mustn't be murmuring we mustn't be murmuring you mustn't be murmuring they mustn't be murmuring
Perfect	V-ing perfect
I mustn't have murmured you mustn't have murmured she mustn't have murmured we mustn't have murmured you mustn't have murmured they mustn't have murmured	I mustn't have been murmuring you mustn't have been murmuring she mustn't have been murmuring we mustn't have been murmuring you mustn't have been murmuring they mustn't have been murmuring

Interrogative form

Simple form	V-ing form
must I murmur? must you murmur? must she murmur? must we murmur? must you murmur? must they murmur?	must I be murmuring? must you be murmuring? must she be murmuring? must we be murmuring? must you be murmuring? must they be murmuring?
Perfect	V-ing perfect
must I have murmured? must you have murmured? must she have murmured? must we have murmured? must you have murmured? must they have murmured?	must I have been murmuring? must you have been murmuring? must she have been murmuring? must we have been murmuring? must you have been murmuring? must they have been murmuring?

Interro-negative form

Simple form	V-ing form
mustn't I murmur? mustn't you murmur? mustn't she murmur? mustn't we murmur? mustn't you murmur? mustn't they murmur?	mustn't I be murmuring? mustn't you be murmuring? mustn't she be murmuring? mustn't we be murmuring? mustn't you be murmuring? mustn't they be murmuring?
Perfect	V-ing perfect
mustn't I have murmured? mustn't you have murmured? mustn't she have murmured? mustn't we have murmured? mustn't you have murmured? mustn't they have murmured?	mustn't I have been murmuring? mustn't you have been murmuring? mustn't she have been murmuring? mustn't we have been murmuring? mustn't you have been murmuring? mustn't they have been murmuring?