English verb conjugation
MUST NAB

Regular verb: nab - nabbed - nabbed

Affirmation

Simple form	V-ing form
I must nab you must nab he must nab we must nab you must nab they must nab	I must be nabbing you must be nabbing he must be nabbing we must be nabbing you must be nabbing they must be nabbing
Perfect	V-ing perfect
I must have nabbed you must have nabbed he must have nabbed we must have nabbed you must have nabbed they must have nabbed	I must have been nabbing you must have been nabbing he must have been nabbing we must have been nabbing you must have been nabbing they must have been nabbing

Negation

Simple form	V-ing form
I mustn't nab you mustn't nab he mustn't nab we mustn't nab you mustn't nab they mustn't nab	I mustn't be nabbing you mustn't be nabbing he mustn't be nabbing we mustn't be nabbing you mustn't be nabbing they mustn't be nabbing
Perfect	V-ing perfect
I mustn't have nabbed you mustn't have nabbed he mustn't have nabbed we mustn't have nabbed you mustn't have nabbed they mustn't have nabbed	I mustn't have been nabbing you mustn't have been nabbing he mustn't have been nabbing we mustn't have been nabbing you mustn't have been nabbing they mustn't have been nabbing

Interrogative form

Simple form	V-ing form
must I nab? must you nab? must he nab? must we nab? must you nab? must they nab?	must I be nabbing? must you be nabbing? must he be nabbing? must we be nabbing? must you be nabbing? must they be nabbing?
Perfect	V-ing perfect
must I have nabbed? must you have nabbed? must he have nabbed? must we have nabbed? must you have nabbed? must they have nabbed?	must I have been nabbing? must you have been nabbing? must he have been nabbing? must we have been nabbing? must you have been nabbing? must they have been nabbing?

Interro-negative form

Simple form	V-ing form
mustn't I nab? mustn't you nab? mustn't he nab? mustn't we nab? mustn't you nab? mustn't they nab?	mustn't I be nabbing? mustn't you be nabbing? mustn't he be nabbing? mustn't we be nabbing? mustn't you be nabbing? mustn't they be nabbing?
Perfect	V-ing perfect
mustn't I have nabbed? mustn't you have nabbed? mustn't he have nabbed? mustn't we have nabbed? mustn't you have nabbed? mustn't they have nabbed?	mustn't I have been nabbing? mustn't you have been nabbing? mustn't he have been nabbing? mustn't we have been nabbing? mustn't you have been nabbing? mustn't they have been nabbing?