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 must not nab you must not nab he must not nab we must not nab you must not nab they must not nab	I must not be nabbing you must not be nabbing he must not be nabbing we must not be nabbing you must not be nabbing they must not be nabbing
Perfect	V-ing perfect
I must not have nabbed you must not have nabbed he must not have nabbed we must not have nabbed you must not have nabbed they must not have nabbed	I must not have been nabbing you must not have been nabbing he must not have been nabbing we must not have been nabbing you must not have been nabbing they must not 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
must I not nab? must you not nab? must he not nab? must we not nab? must you not nab? must they not nab?	must I not be nabbing? must you not be nabbing? must he not be nabbing? must we not be nabbing? must you not be nabbing? must they not be nabbing?
Perfect	V-ing perfect
must I not have nabbed? must you not have nabbed? must he not have nabbed? must we not have nabbed? must you not have nabbed? must they not have nabbed?	must I not have been nabbing? must you not have been nabbing? must he not have been nabbing? must we not have been nabbing? must you not have been nabbing? must they not have been nabbing?