English verb conjugation
MUST COUNTERFEIT

Regular verb: counterfeit - counterfeited - counterfeited

Affirmation

Simple form	V-ing form
I must counterfeit you must counterfeit he must counterfeit we must counterfeit you must counterfeit they must counterfeit	I must be counterfeiting you must be counterfeiting he must be counterfeiting we must be counterfeiting you must be counterfeiting they must be counterfeiting
Perfect	V-ing perfect
I must have counterfeited you must have counterfeited he must have counterfeited we must have counterfeited you must have counterfeited they must have counterfeited	I must have been counterfeiting you must have been counterfeiting he must have been counterfeiting we must have been counterfeiting you must have been counterfeiting they must have been counterfeiting

Negation

Simple form	V-ing form
I must not counterfeit you must not counterfeit he must not counterfeit we must not counterfeit you must not counterfeit they must not counterfeit	I must not be counterfeiting you must not be counterfeiting he must not be counterfeiting we must not be counterfeiting you must not be counterfeiting they must not be counterfeiting
Perfect	V-ing perfect
I must not have counterfeited you must not have counterfeited he must not have counterfeited we must not have counterfeited you must not have counterfeited they must not have counterfeited	I must not have been counterfeiting you must not have been counterfeiting he must not have been counterfeiting we must not have been counterfeiting you must not have been counterfeiting they must not have been counterfeiting

Interrogative form

Simple form	V-ing form
must I counterfeit? must you counterfeit? must he counterfeit? must we counterfeit? must you counterfeit? must they counterfeit?	must I be counterfeiting? must you be counterfeiting? must he be counterfeiting? must we be counterfeiting? must you be counterfeiting? must they be counterfeiting?
Perfect	V-ing perfect
must I have counterfeited? must you have counterfeited? must he have counterfeited? must we have counterfeited? must you have counterfeited? must they have counterfeited?	must I have been counterfeiting? must you have been counterfeiting? must he have been counterfeiting? must we have been counterfeiting? must you have been counterfeiting? must they have been counterfeiting?

Interro-negative form

Simple form	V-ing form
must I not counterfeit? must you not counterfeit? must he not counterfeit? must we not counterfeit? must you not counterfeit? must they not counterfeit?	must I not be counterfeiting? must you not be counterfeiting? must he not be counterfeiting? must we not be counterfeiting? must you not be counterfeiting? must they not be counterfeiting?
Perfect	V-ing perfect
must I not have counterfeited? must you not have counterfeited? must he not have counterfeited? must we not have counterfeited? must you not have counterfeited? must they not have counterfeited?	must I not have been counterfeiting? must you not have been counterfeiting? must he not have been counterfeiting? must we not have been counterfeiting? must you not have been counterfeiting? must they not have been counterfeiting?