English verb conjugation
MUST KIBITZ

Regular verb: kibitz - kibitzed - kibitzed

Affirmation

Simple form	V-ing form
I must kibitz you must kibitz he must kibitz we must kibitz you must kibitz they must kibitz	I must be kibitzing you must be kibitzing he must be kibitzing we must be kibitzing you must be kibitzing they must be kibitzing
Perfect	V-ing perfect
I must have kibitzed you must have kibitzed he must have kibitzed we must have kibitzed you must have kibitzed they must have kibitzed	I must have been kibitzing you must have been kibitzing he must have been kibitzing we must have been kibitzing you must have been kibitzing they must have been kibitzing

Negation

Simple form	V-ing form
I must not kibitz you must not kibitz he must not kibitz we must not kibitz you must not kibitz they must not kibitz	I must not be kibitzing you must not be kibitzing he must not be kibitzing we must not be kibitzing you must not be kibitzing they must not be kibitzing
Perfect	V-ing perfect
I must not have kibitzed you must not have kibitzed he must not have kibitzed we must not have kibitzed you must not have kibitzed they must not have kibitzed	I must not have been kibitzing you must not have been kibitzing he must not have been kibitzing we must not have been kibitzing you must not have been kibitzing they must not have been kibitzing

Interrogative form

Simple form	V-ing form
must I kibitz? must you kibitz? must he kibitz? must we kibitz? must you kibitz? must they kibitz?	must I be kibitzing? must you be kibitzing? must he be kibitzing? must we be kibitzing? must you be kibitzing? must they be kibitzing?
Perfect	V-ing perfect
must I have kibitzed? must you have kibitzed? must he have kibitzed? must we have kibitzed? must you have kibitzed? must they have kibitzed?	must I have been kibitzing? must you have been kibitzing? must he have been kibitzing? must we have been kibitzing? must you have been kibitzing? must they have been kibitzing?

Interro-negative form

Simple form	V-ing form
must I not kibitz? must you not kibitz? must he not kibitz? must we not kibitz? must you not kibitz? must they not kibitz?	must I not be kibitzing? must you not be kibitzing? must he not be kibitzing? must we not be kibitzing? must you not be kibitzing? must they not be kibitzing?
Perfect	V-ing perfect
must I not have kibitzed? must you not have kibitzed? must he not have kibitzed? must we not have kibitzed? must you not have kibitzed? must they not have kibitzed?	must I not have been kibitzing? must you not have been kibitzing? must he not have been kibitzing? must we not have been kibitzing? must you not have been kibitzing? must they not have been kibitzing?