English verb conjugation
MUST REGISTER

Regular verb: register - registered - registered

Affirmation

Simple form	V-ing form
I must register you must register he must register we must register you must register they must register	I must be registering you must be registering he must be registering we must be registering you must be registering they must be registering
Perfect	V-ing perfect
I must have registered you must have registered he must have registered we must have registered you must have registered they must have registered	I must have been registering you must have been registering he must have been registering we must have been registering you must have been registering they must have been registering

Negation

Simple form	V-ing form
I must not register you must not register he must not register we must not register you must not register they must not register	I must not be registering you must not be registering he must not be registering we must not be registering you must not be registering they must not be registering
Perfect	V-ing perfect
I must not have registered you must not have registered he must not have registered we must not have registered you must not have registered they must not have registered	I must not have been registering you must not have been registering he must not have been registering we must not have been registering you must not have been registering they must not have been registering

Interrogative form

Simple form	V-ing form
must I register? must you register? must he register? must we register? must you register? must they register?	must I be registering? must you be registering? must he be registering? must we be registering? must you be registering? must they be registering?
Perfect	V-ing perfect
must I have registered? must you have registered? must he have registered? must we have registered? must you have registered? must they have registered?	must I have been registering? must you have been registering? must he have been registering? must we have been registering? must you have been registering? must they have been registering?

Interro-negative form

Simple form	V-ing form
must I not register? must you not register? must he not register? must we not register? must you not register? must they not register?	must I not be registering? must you not be registering? must he not be registering? must we not be registering? must you not be registering? must they not be registering?
Perfect	V-ing perfect
must I not have registered? must you not have registered? must he not have registered? must we not have registered? must you not have registered? must they not have registered?	must I not have been registering? must you not have been registering? must he not have been registering? must we not have been registering? must you not have been registering? must they not have been registering?