English verb conjugation
MUST ZING

Regular verb: zing - zinged - zinged

Affirmation

Simple form	V-ing form
I must zing you must zing she must zing we must zing you must zing they must zing	I must be zinging you must be zinging she must be zinging we must be zinging you must be zinging they must be zinging
Perfect	V-ing perfect
I must have zinged you must have zinged she must have zinged we must have zinged you must have zinged they must have zinged	I must have been zinging you must have been zinging she must have been zinging we must have been zinging you must have been zinging they must have been zinging

Negation

Simple form	V-ing form
I mustn't zing you mustn't zing she mustn't zing we mustn't zing you mustn't zing they mustn't zing	I mustn't be zinging you mustn't be zinging she mustn't be zinging we mustn't be zinging you mustn't be zinging they mustn't be zinging
Perfect	V-ing perfect
I mustn't have zinged you mustn't have zinged she mustn't have zinged we mustn't have zinged you mustn't have zinged they mustn't have zinged	I mustn't have been zinging you mustn't have been zinging she mustn't have been zinging we mustn't have been zinging you mustn't have been zinging they mustn't have been zinging

Interrogative form

Simple form	V-ing form
must I zing? must you zing? must she zing? must we zing? must you zing? must they zing?	must I be zinging? must you be zinging? must she be zinging? must we be zinging? must you be zinging? must they be zinging?
Perfect	V-ing perfect
must I have zinged? must you have zinged? must she have zinged? must we have zinged? must you have zinged? must they have zinged?	must I have been zinging? must you have been zinging? must she have been zinging? must we have been zinging? must you have been zinging? must they have been zinging?

Interro-negative form

Simple form	V-ing form
mustn't I zing? mustn't you zing? mustn't she zing? mustn't we zing? mustn't you zing? mustn't they zing?	mustn't I be zinging? mustn't you be zinging? mustn't she be zinging? mustn't we be zinging? mustn't you be zinging? mustn't they be zinging?
Perfect	V-ing perfect
mustn't I have zinged? mustn't you have zinged? mustn't she have zinged? mustn't we have zinged? mustn't you have zinged? mustn't they have zinged?	mustn't I have been zinging? mustn't you have been zinging? mustn't she have been zinging? mustn't we have been zinging? mustn't you have been zinging? mustn't they have been zinging?