English verb conjugation
MUST FAULT

Regular verb: fault - faulted - faulted

Affirmation

Simple form	V-ing form
I must fault you must fault she must fault we must fault you must fault they must fault	I must be faulting you must be faulting she must be faulting we must be faulting you must be faulting they must be faulting
Perfect	V-ing perfect
I must have faulted you must have faulted she must have faulted we must have faulted you must have faulted they must have faulted	I must have been faulting you must have been faulting she must have been faulting we must have been faulting you must have been faulting they must have been faulting

Negation

Simple form	V-ing form
I mustn't fault you mustn't fault she mustn't fault we mustn't fault you mustn't fault they mustn't fault	I mustn't be faulting you mustn't be faulting she mustn't be faulting we mustn't be faulting you mustn't be faulting they mustn't be faulting
Perfect	V-ing perfect
I mustn't have faulted you mustn't have faulted she mustn't have faulted we mustn't have faulted you mustn't have faulted they mustn't have faulted	I mustn't have been faulting you mustn't have been faulting she mustn't have been faulting we mustn't have been faulting you mustn't have been faulting they mustn't have been faulting

Interrogative form

Simple form	V-ing form
must I fault? must you fault? must she fault? must we fault? must you fault? must they fault?	must I be faulting? must you be faulting? must she be faulting? must we be faulting? must you be faulting? must they be faulting?
Perfect	V-ing perfect
must I have faulted? must you have faulted? must she have faulted? must we have faulted? must you have faulted? must they have faulted?	must I have been faulting? must you have been faulting? must she have been faulting? must we have been faulting? must you have been faulting? must they have been faulting?

Interro-negative form

Simple form	V-ing form
mustn't I fault? mustn't you fault? mustn't she fault? mustn't we fault? mustn't you fault? mustn't they fault?	mustn't I be faulting? mustn't you be faulting? mustn't she be faulting? mustn't we be faulting? mustn't you be faulting? mustn't they be faulting?
Perfect	V-ing perfect
mustn't I have faulted? mustn't you have faulted? mustn't she have faulted? mustn't we have faulted? mustn't you have faulted? mustn't they have faulted?	mustn't I have been faulting? mustn't you have been faulting? mustn't she have been faulting? mustn't we have been faulting? mustn't you have been faulting? mustn't they have been faulting?